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    Continuum Audio

    Continuum Audio features conversations with the guest editors and authors of Continuum: Lifelong Learning in Neurology, the premier topic-based neurology clinical review and CME journal from the American Academy of Neurology. AAN members can earn CME for listening to interviews for review articles and completing the evaluation on the AAN’s Online Learning Center.

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    Latest Episodes:
    Diversity and Underserved Patient Populations in Epilepsy With Dr. Dave Clarke Mar 26, 2025
    Show notes

    Despite advances in epilepsy management, disparities and lack of inclusion of many people with epilepsy are associated with increased morbidity and mortality. Improving awareness and promoting diversity in research participation can advance treatment for underserved populations and improve trust. In this episode, Teshamae Monteith, MD, PhD, FAAN speaks Dave F. Clarke, MBBS, FAES, author of the article "Diversity and Underserved Patient Populations in Epilepsy," in the Continuum® February 2025 Epilepsy issue. Dr. Monteith is a Continuum® Audio interviewer and an associate editor of Continuum® Audio and an associate professor of clinical neurology at the University of Miami Miller School of Medicine in Miami, Florida. Dr. Clarke is the Kozmetsky Family Foundation Endowed Chair of Pediatric Epilepsy and Chief or Comprehensive Pediatric Epilepsy Center, Dell Medical School at the University of Texas at Austin in Austin, Texas. Additional Resources Read the article: Diversity and Underserved Patient Populations in Epilepsy Subscribe to Continuum: shop.lww.com/Continuum Earn CME (available only to AAN members): continpub.com/AudioCME Continuum® Aloud (verbatim audio-book style recordings of articles available only to Continuum® subscribers): continpub.com/Aloud More about the American Academy of Neurology: aan.com Social Media facebook.com/continuumcme @ContinuumAAN Host: @HeadacheMD Full episode transcript available here Dr Jones: This is Dr Lyell Jones, Editor-in-Chief of Continuum, the premier topic-based neurology clinical review and CME journal from the American Academy of Neurology. Thank you for joining us on Continuum Audio, which features conversations with Continuum's guest editors and authors who are the leading experts in their fields. Subscribers to the Continuum Journal can read the full article or listen to verbatim recordings of the article and have access to exclusive interviews not featured on the podcast. Please visit the link in the episode notes for more information on the article, subscribing to the journal, and how to get CME. Dr Monteith: This is Dr Teshamae Monteith. Today I'm interviewing Dr Dave Clarke about his article on diversity and underserved patient populations in epilepsy, which appears in the February 2025 Continuum issue on epilepsy. So why don't you introduce yourself to our audience? Dr Clarke: Sure. My name is Dr Dave Clarke, as alluded to. I'm presently at the University of Texas in Austin, originating from much farther south. I'm from Antigua, but have been here for quite a while working within the field in epilepsy surgery, but more and more getting involved in outreach, access to care, and equity of healthcare in epilepsy. Dr Monteith: And how did you get involved in this kind of work? Dr Clarke: That's an amazing question. You know, I did it in a bit of a inside out fashion. I initially started working in the field and trying to get access to persons in the Caribbean that didn't have any neurological care or investigative studies, but very quickly realized that persons around the corner here in Texas and wherever I've worked have had the exact same problems, getting access via fiscal or otherwise epilepsy care, or geographically getting access, with so few having neurologists close at hand. Therefore, I started working both on a regional, national, and it transcended to a global scale. Dr Monteith: Wow, so you're just everywhere. Dr Clarke: Well, building bridges. I've found building bridges and helping with knowledge and garnering knowledge, you can expand your reach without actually moving, which is quite helpful. Dr Monteith: Yeah. So why don't you tell us why you think this work is so important in issues of diversity, underserved populations, and of course, access to epilepsy care? Dr Clarke: Sure, not a problem. And I think every vested person in this can give you a different spiel as to why they think it's important. So, I'll add in a few facts pertaining to access, but also tell you about why I think personally that it's not only important, but it will improve care for all and improve what you believe you could do for a patient. Because the sad thing is to have a good outcome in the United States presently, we have over three hundred epilepsy centers, but they have about eight or nine states that don't have any epilepsy centers at all. And even within states themselves, people have to travel up to eight hours, i.e., in Texas, to get adequate epilepsy care. So that's one layer. Even if you have a epilepsy center around the corner, independent of just long wait times, if you have a particular race or ethnicity, we've found out that wait may be even longer or you may be referred to a general practitioner moreso than being referred to an epilepsy center. Then you add in layers of insurance or lack thereof, which is a big concern regardless of who you are; poverty, which is a big concern; and the layers just keep adding more. Culture, etcetera, etcetera. If you could just break down some of those barriers, it has been shown quite a few years ago that once you get to an epilepsy center, you can negate some of those factors. You can actually reduce time to access and you can improve care. So, that's why I'm so passionate about this, because something could potentially be done about it. Dr Monteith: That's cool. So, it sounds like you have some strategies, some strategies for us. Dr Clarke: Indeed. And you know, this is a growth and this is a learning curve for me and will be for others. But I think on a very local, one-to-one scale, the initial strategy I would suggest is you have to be a good listener. Because we don't know how, when, where or why people are coming to us for their concerns. And in order to judge someone, if they may not have had a follow-up visit or they may not have gotten to us after five medications, the onus may not have been on that person. In other words, as we learned when we were in medical school, history is extremely important, but social history, cultural history, that's also just as important when we're trying to create bridges. The second major thing that we have to learn is we can't do this alone. So, without others collaborating with us outside of even our fields, the social worker who will engage, the community worker who will discuss the translator for language; unless you treat those persons with respect and engage with those persons to help you to mitigate problems, you'll not get very far. And then we'll talk about more, but the last thing I'll say now is they have so many organizations out there, the Institute of Medicine or the International League Against Epilepsy or members of the American Epilepsy Society, that have ways, ideas, papers, and articles that can help guide you as to how better mitigate many of these problems. Dr Monteith: Great. So, you already mentioned a lot of things. What are some things that you feel absolutely the reader should take away in reading your article? You mentioned already listening skills, the importance of interdisciplinary work, including social work, and that there are strategies that we can use to help reduce some of this access issues. But give me some of the essential points and then we'll dive in. Dr Clarke: OK. I think first and foremost we have to lay the foundation in my mind and realize what exactly is happening. If you are Native American, of African descent, Hispanic, Latinx, geographically not in a region where care can be delivered, choosing one time to epilepsy surgery may be delayed twice, three, four times that of someone of white descent. If you are within certain regions in the US where they may have eight, nine, ten, fourteen epilepsy centers, you may get to that center within two to three years. But if you're in an area where they have no centers at all, or you live in the Dakotas, it may be very difficult to get to an individual that could provide that care for you. That's very, very basic. But a few things have happened a few years ago and even more recently that can help. COVID created this groundswell of ambulatory engagement and ambulatory care. I think that can help to mitigate time to get into that person and improving access. In saying that, there are many obstacles to that, but that's what we have to work towards: that virtual engagement and virtual care. That would suggest in some instances to some persons that it will take away the one-to-one care that you may get with persons coming to you. But I guarantee that you will not lose patients because of this, because there's too big a vacuum. Only 22% of persons that should actually get to epilepsy centers actually get to epilepsy centers. So, I think we can start with that foundation, and you can go to the article and learn a lot more about what the problems are. Because if you don't know what the problems are, you can't come up with solutions. Dr Monteith: Just give us a few of the most persistent inequities and epilepsy care? Dr Clarke: Time to seeing a patient, very persistent. And that's both a disparity, a deficiency, and an inequity. And if you allow me, I'll just explain the slight but subtle difference. So, we know that time to surgery in epilepsy in persons that need epilepsy surgery can be as long as seventeen years. That's for everyone, so that's a deficiency in care. I just mentioned that some sociodemographic populations may not get the same care as someone else, and that's a disparity between one versus the other. Health equity, whether it be from NIH or any other definition, suggests that you should get equitable care between one person and the other. And that brings in not only medical, medicolegal or potential bias, that we may have one person versus the other. So, there's a breakdown as to those different layers that may occur. And in that I'm telling you what some of the potential differences are. Dr Monteith: And so, you mentioned, it comes up, race and ethnicity being a major issue as well as some of the geographic factors. How does that impact diagnosis and really trying to care for our patients? Dr Clarke: So again, I'm going to this article or going to, even. prior articles. It has been shown by many, and most recently in New Jersey, that if you're black, Hispanic, Latin- Latinx, it takes you greater than two times the time to surgery. Reduced time to surgery significantly increases morbidity. It potentially increases mortality, as has been shown by a colleague of mine presently in Calgary. And independent of that, we don't look at the other things, the other socially related things. Driving, inability to work, inability to be adequately educated, the stigma related to that in various cultures, various countries. So, that deficit not only increased the probability of having seizures, but we have to look at the umbrella as to what it does. It significantly impacts quality of life of that individual and, actually, the individuals around them. Dr Monteith: So, what are some of these drivers, and how can we address them, or at least identify them, in our clinic? Dr Clarke: That's a question that's rather difficult to answer. And not because there aren't ideas about it, but there's actually mitigating those ideas or changing those ideas we're just presently trying to do. Although outlines have been given. So, in about 2013, the federal government suggested outlines to improve access and to reduce these inequities. And I'll just give you a few of them. One of those suggestions was related to language and having more improved and readily available translators. Something simple, and that could actually foster discussions and time to better management. Another suggestion was try to train more persons from underserved populations, persons of color. Reason being, it has been shown in the social sciences and it is known in the medical sciences that, if you speak to a person of similar culture, you tend to have a better rapport, you tend to be more compliant, and that track would move forward, and it reduces bias. Now we don't have that presently, and I'm not sure if we'll have that in the near future, although we're trying. So then, within your centers, if you have trainings on cultural sensitivity, or if you have engagements and lectures about how you can engage persons from different populations, those are just some very simple pearls that can improve care. This has been updated several times with the then-Institute of Medicine in 2012, 2013, they came out with, in my mind, a pretty amazing article---but I'm very biased---in which they outline a number of strategic initiatives that could be taken to improve research, improve clinical care, improve health equity through health services research, to move the field forward, and to improve overall care. They updated this in 2020, and it's a part of the 2030 federal initiative not only for epilepsy, but to improve overarching care. All of this is written in bits and pieces and referenced in the article. To add icing on top, the World Health Organization, through advocacy of neurological groups as well as the International League Against Epilepsy and the AES, came out with the Intersectoral Action Plan on Epilepsy and Other Neurological Diseases, which advocates for parallel improvement in overall global care. And the United States have signed on to it, and that have lit a fire to our member organizations like the American Epilepsy Society, American Academy of Neurology, and others, trying to create initiatives to address this here. I started off by saying this was difficult because, you know, we have debated epilepsy care through 1909 when the International League against Epilepsy was founded, and we have continually come up with ways to try and advance care. But this have been the most difficult and critical because there's social dynamics and social history and societal concerns that have negated us moving forward in this direction. But fortunately, I think we're moving in that direction presently. That's my hope. And the main thing we have to do is try to sustain that. Dr Monteith: So, you talked about the importance of these global initiatives, which is huge, and other sectors outside of neurology. Like for example, technology, you spoke about telemedicine. I think you were referring to telemedicine with COVID. What other technologies that are more specific to the field of epilepsy, some of these monitorings that maybe can be done? Dr Clarke: I was just going to just going to jump on that. Thank you so much for asking. Dr Monteith: I have no disclosures in this field. I think it's important and exciting to think how can we increase access and even access to monitoring some of these technologies. That might be expensive, which is another issue, but…. Dr Clarke: So, the main things in epilepsy diagnosis and management: you want to hear from the patient history, you want to see what the seizures look like, and then you want to find ways in which to monitor those seizures. Hearing from the patient, they have these questionnaires that have been out there, and this is local, regional, global, many of them standardized in English and Spanish. Our colleagues in Boston actually created quite a neat one in English and Spanish that some people are using. Ecuador has one. We have created someone- something analogous. And those questionnaires can be sent out virtually and you can retrieve them. But sometimes seeing is believing. So, video uploads of seizures, especially the cell phone, I think has been management-changing for the field of epilepsy. The thing you have to do however, is do that in a HIPAA-compliant way. And several studies are ongoi…

    Full show notes at the publisher

    A Multidisciplinary Approach to Nonepileptic Events With Dr. Adriana Bermeo-Ovalle Mar 19, 2025
    Show notes

    Nonepileptic events are prevalent and highly disabling, and multiple pathophysiologic mechanisms for these events have been proposed. Multidisciplinary care teams enable the efficient use of individual expertise at different treatment stages to address presentation, risk factors, and comorbidities. In this episode, Kait Nevel, MD, speaks with Adriana C. Bermeo-Ovalle, MD, an author of the article "A Multidisciplinary Approach to Nonepileptic Events," in the Continuum® February 2025 Epilepsy issue. Dr. Nevel is a Continuum® Audio interviewer and a neurologist and neuro-oncologist at Indiana University School of Medicine in Indianapolis, Indiana. Dr. Bermeo-Ovalle is a professor and vice-chair for Faculty Affairs in the Department of Neurological Sciences at Rush University Medical Center in Chicago, Illinois. Additional Resources Read the article: A Multidisciplinary Approach to Nonepileptic Events Subscribe to Continuum: shop.lww.com/Continuum Earn CME (available only to AAN members): continpub.com/AudioCME Continuum® Aloud (verbatim audio-book style recordings of articles available only to Continuum® subscribers): continpub.com/Aloud More about the American Academy of Neurology: aan.com Social Media facebook.com/continuumcme @ContinuumAAN Host: @IUneurodocmom Full episode transcript available here Dr. Jones: This is Dr Lyell Jones, Editor-in-Chief of Continuum, the premier topic-based neurology clinical review and CME journal from the American Academy of Neurology. Thank you for joining us on Continuum Audio, which features conversations with Continuum's guest editors and authors who are the leading experts in their fields. Subscribers to the Continuum Journal can read the full article or listen to verbatim recordings of the article and have access to exclusive interviews not featured on the podcast. Please visit the link in the episode notes for more information on the article, subscribing to the journal, and how to get CME. Dr Nevel: Hello, this is Dr Kait Nevel. Today I'm interviewing Dr Adriana Bermeo about her article on a multidisciplinary approach to nonepileptic events, which she wrote with Dr Victor Petron. This article appears in the February 2025 Continuum issue on epilepsy. Welcome to the podcast, and please introduce yourself to our audience. Dr Bermeo-Ovalle: Hello Dr Neville, it's a pleasure to be here. Thank you very much for inviting me. My name is Adriana Bermeo and I'm an adult epileptologist at Rush University Medical Center in Chicago, and I am also the codirector of the NEST clinic, which is a treatment clinic for patients with nonepileptic seizures within our level four epilepsy center. Dr Nevel: Wonderful. Well, thank you so much for being here, and I can't wait to talk to you about your article and learn a little bit about NEST, maybe, during our conversation, and how you approach things. To start us off talking about your article today, could you share with us what you think is the most important takeaway from your article for the practicing neurologist? Dr Bermeo-Ovalle: Wonderful. There's some messages that I would like people to get from working with patients with functional neurologic disorders in general. The first one is that functional neurologic disorders are very common in presentation in the neurologic clinic, almost no matter what your practice of self-specialty care is. The second is that for people who treat patients primarily with seizures or epilepsy, they account for between 5 to 10% of our patients in the clinic, but about 30% of our patients in our epilepsy monitoring unit because the seizures typically do not respond to anti-seizure medication management. Also, that in order to diagnose them, you don't need to have a neuropsychological stress already be available for the patient or the clinician. And the most important thing is that there are available treatments for these patients and that there are options that we can offer them for them to have less seizures and to be more integrated to whatever activities they want to get integrated. Dr Nevel: Wonderful. What do you think a practicing neurologist might find surprising after reading your article? Dr Bermeo-Ovalle: I think still many neurologists feel very hopeless when they see patients with these conditions. They do not have very good answers right away for the patients, which is frustrating for the neurologist. And they don't think there's too much they can do to help them other than send them somewhere else, which is very difficult for the neurologist and is crushing to the patients to see these doctors that they're hoping to find answers to and then just find that there's not much to do. But what I want neurologists to know is that we are making strides in our understanding of the condition and that there are effective treatments available. And I hope that after reading this and engaging with this conversation, they will feel curious, even hopeful when they see the next patient in the clinic. Dr Nevel: Yeah, absolutely. I find the history of nonepileptic seizures really interesting and I enjoyed that part of your article. How has our understanding of nonepileptic seizures evolved over the centuries, and how does our current understanding of nonepileptic seizures inform the terminology that we use? Dr Bermeo-Ovalle: Yeah. The way we name things and the way we offer treatment goes along to how we understand things. So, the functional seizures and epileptic seizures were understood in ancient times as possession from the spirits or the demons or the gods, and then treatments were offered to those kind of influences and that continues to happen with functional seizures. So, we go through the era when this was thought to be a women-only condition that was stemming from their reproductive organs and then treatments accordingly were presented. And later on with Charcot and then Freud, they evolved to even conversion disorders, which is one understanding the most conversion disorders, which is one of the frameworks where this condition has been treated with psychotherapy, psychoanalytic psychotherapy. And in our current understanding, we understand functional neurologic disorders in general as a more like a connection, communication network disorder, between areas of the brain that modulate emotional processing and movement control. And therefore, our approach these days is much more geared towards rehabilitation. You know, I think that's the evolution of thinking in many different areas. And as we learn more, we will be acquiring more tools to help our patients. Dr Nevel: Yeah, great. Thanks so much for that answer. Just reading the historical information that you have in your article, you can imagine a lot of stigma with this diagnosis too over time, and that- I think that that's lessening. But I was wondering if you could talk about that a little bit. How do we approach that with our patients and loved ones, any stigma that they might feel or perceive from being diagnosed with nonepileptic seizures? Dr Bermeo-Ovalle: Thank you for asking that question. Stigma is actually an important problem even for people living with epilepsy. There's still a lot of misunderstanding of what epilepsy is and how it affects people, and that people living with epilepsy can live normal, healthy lives and do everything they want to do with appropriate treatment. And if a stigma is still a problem with epilepsy, it is a huge problem for patients living with functional neurologic symptoms in general, but particularly with functional seizures or nonepileptic seizures. Because the stigma in this population is even perpetuated by the very people who are supposed to help them: physicians, primary care doctors, emergency room doctors. Unfortunately, the new understanding of this condition has not gotten to everybody. And these patients are often even blamed for their symptoms and for the consequences of their symptoms and of their seizures in their family members, in their job environment, in their community. Living with that is really, really crushing, right? Even people talk about, a lot about malingering. They come back about secondary gain. I can tell you the patients I see with functional seizures gain nothing from having this condition. They lose, often, a lot. They lose employment, they lose ability to drive. They lose their agency and their ability to function normally in society. I do think that the fight- the fighting of stigma is one that we should do starting from within, starting from the healthcare community into our understanding of what these patients go through and what is causing their symptoms and what can we do to help them. So there's a lot of good work to be done. Dr Nevel: Absolutely. And it starts, like you said, with educating everybody more about nonepileptic seizures and why this happens. The neurobiology, neurophysiology of it that you outlined so nicely in your article, I'm going to encourage the listeners to look at Figure 1 and 4 for some really nice visualization of these really complex things that we're learning a lot about now. And so, if you don't mind for our listeners, kind of going over some of the neurobiology and neurophysiology of nonepileptic seizures and what we're learning about it. Dr Bermeo-Ovalle: Our understanding of the pathophysiology of functional neurologic seizure disorder is in its infancy at this point. The neurobiological processes that integrate emotional regulation and our responses to it, both to internal stimuli and to external stimuli and how they affect our ability to have control over our movement---it's actually amazing that we as neurologists know so little about these very complex processes that the brain do, right? And for many of us this is the reason why we're in neurology, right, to be at the forefront of this understanding of our brain. So, this is in that realm. It is interesting what we have learned, but it's amazing all that we have to learn. There is the clear relationship between risk factors. So, we know patients with functional neurologic symptom disorder and with functional seizures, particularly in many different places in the world with many different beliefs, relationship to their body, to their expression of their body, have this condition no matter how different they are. And also, we know that they have commonalities. For example, traumatic experiences that are usually either very strong traumatic experiences or very pervasive traumatic experiences or recurrent over time of different quality. So, we are in the process of understanding how these traumatic experiences actually inform brain connectivity and brain development that result in this lack of connections between brain areas and the expression of them, and that result in this kind of disorder. I wish I can tell you more about it or that I would understand more about it, but I am just grateful for the work that has been done so that we can understand more and therefore have more to offer to these patients and their families and their communities that are support. Dr Nevel: Yeah, absolutely. That's always the key, and just really exciting that we're starting to understand this better so that we can hopefully treat it better and inform our patients better---and ourselves. Can you talk to us a little bit about the multidisciplinary team approach and taking care of patients with nonepileptic seizures? Who's involved, what does best practice model look like? You have a clinic there, obviously; if you could share with us how your clinic runs in the multidisciplinary approach for care of these patients? Dr Bermeo-Ovalle: The usual experience of patients dealing with functional seizures, because this is a condition that has neurological symptoms and psychiatric symptoms, is that they go to the neurologist and the neurologist does not feel sufficiently able to manage all the psychiatric comorbidities of the condition. So, the patient is sent to psychiatry. The psychiatry really finds themselves very hopeless into handling seizures, which is definitely not their area of expertise, and these patients then being- "ping-ponging" from one to the other, or they are eventually sent to psychotherapy and the psychotherapist doesn't know what they're dealing with. So, we have found with- and we didn't come up with this. We had wonderful support from other institutions who have done- been doing this for a longer time. That bringing all of this specialty together and kind of situating ourselves around the patient so that we can communicate our questions and our discrepancies and our decision between who takes care of what without putting that burden on the patient is the best treatment not only for the patient, who finally feels welcome and not burden, but actually for the team. So that the psychiatrist and the neurologist support the psychotherapist who does the psychotherapy, rehabilitation, mind the program. And we also have the support and the involvement of neuropsychology. So, we have a psychiatrist, a neurologist, social worker, psychotherapist and neuropsychology colleagues. And together we look at the patient from everywhere and we support each other in the treatment of the patient, keeping the patient in the middle and the interest of the patient in the middle. And we have found that that approach has helped our patients the best, but more importantly, makes our job sustainable so that none of us is overburdened with one aspect of the care of the patient and we feel supported from the instances that is not our most comfortable area. So that is one model to do it. There's other models how to do it, but definitely the interdisciplinary care is the way to go so far for the care of patients with functional neurologic symptom disorders and with functional seizures or nonepileptic seizures in particular. Dr Nevel: Yeah, I can see that, that everybody brings their unique expertise and then doesn't feel like they're practicing outside their, like you said, comfort zone or scope of practice. In these clinics---or maybe this happens before the patient gets to this multidisciplinary team---when you've established a diagnosis of nonepileptic seizures, what's your personal approach or style in terms of how you communicate that with the patient and their loved ones? Dr Bermeo-Ovalle: It is important to bring this diagnosis in a positive term. You know, unfortunately the terminology question is still out and there's a lot of teams very invested into how to better characterize this condition and how to- being told that you don't have something is maybe not that satisfying for patients. So, we are still working on that, but we do deliver the diagnosis in positive terms. Like, this is what you have. It's a common condition. It's shared by this many other people in the world. It's a neuropsychiatric disorder and that's why we need the joint or collaborative care from neurology and psychiatry. We know the risk factors and these are the risk factors. You don't have to have all of them in order to have this condition. These are the reasons why we think this is the condition you have. There is coexisting epilepsy and functional seizures as well. We will explore that possibility and if we get to that conclusion, we will treat these two conditions independently and we- our team is able to treat both of them. And we give them the numbers of our own clinic and other similar clinics. And with that we hope that they will be able to get the seizures under better control and back to whatever is important to them. I tell my trainees and my patients that my goals of care for patients with functional seizures are the same as my patients with epileptic seizures, meaning less seizures, less disability, less medica…

    Full show notes at the publisher

    Surgical Treatments, Devices, and Nonmedical Management of Epilepsy With Dr. Daniel Friedman Mar 12, 2025
    Show notes

    Many patients with epilepsy are unable to acheive optimal seizure control with medical therapy. Palliative surgical procedures, neurostimulation devices, and other nonpharmalogical treatments can lead to a meaningful reduction in seizures and improved outcomes. In this episode, Teshamae Monteith, MD FAAN, speaks with Daniel Friedman, MD, MSc, author of the article "Surgical Treatments, Devices, and Nonmedical Management of Epilepsy," in the Continuum® February 2025 Epilepsy issue. Dr. Montieth is a Continuum® Audio interviewer and an associate editor of Continuum® Audio and an associate professor of clinical neurology at the University of Miami Miller School of Medicine in Miami, Florida. Dr. Friedman is a professor (clinical) of neurology at NYU Grossman School of Medicine and Director of NYU Langone Comprehensive Epilepsy Center at NYU Langone Health in New York, New York. Additional Resources Read the article: Surgical Treatments, Devices, and Nonmedical Management of Epilepsy Subscribe to Continuum: shop.lww.com/Continuum Earn CME (available only to AAN members): continpub.com/AudioCME Continuum® Aloud (verbatim audio-book style recordings of articles available only to Continuum® subscribers): continpub.com/Aloud More about the American Academy of Neurology: aan.com Social Media facebook.com/continuumcme @ContinuumAAN Host: @headacheMD Guest: @dfriedman36 Full episode transcript available here Dr Jones: This is Dr Lyell Jones, Editor-in-Chief of Continuum, the premier topic-based neurology clinical review and CME journal from the American Academy of Neurology. Thank you for joining us on Continuum Audio, which features conversations with Continuum's guest editors and authors who are the leading experts in their fields. Subscribers to the Continuum Journal can read the full article or listen to verbatim recordings of the article and have access to exclusive interviews not featured on the podcast. Please visit the link in the episode notes for more information on the article, subscribing to the journal, and how to get CME. Dr Monteith: This is Dr Teshamae Monteith. Today, I'm interviewing Dr Daniel Friedman about his article on surgical treatments, devices, tools, and non-medication management of epilepsy, which appears in the February 2025 Continuum issue on epilepsy. Welcome to the podcast. How are you? Dr Friedman: I'm well, how are you? Dr Monteith: Thank you for your article. Dr Friedman: Thank you for the opportunity to talk today. Dr Monteith: Why don't you introduce yourself? Dr Friedman: So yeah, so I'm Dan Friedman. I am a professor of neurology here at NYU Grossman School of Medicine and I am the director of the NYU Comprehensive Epilepsy Center. I'm primarily an adult neurologist and I treat teens and adults with hard- difficult-to-treat epilepsy, including surgical treatments for epilepsy. Dr Monteith: And I know you see a lot of patients because I did my residency there. And so, when you graduate, you get a lot of it, like I think many, many residents. What inspired you to choose epilepsy as a profession? Dr Friedman: I came to neurology through my interest in neuroscience. I was a neuroscience undergraduate. I was very interested in the brain and brain function. Particularly, I was interested in how neurons communicate and organize to entrain and rhythms and that encode information. And through that interest and through my experiences in the laboratory, I actually became interested in how they do that in pathological circumstances like seizures. And so, I started reading about epilepsy, and then when I started seeing patients with epilepsy, you know, I decided this is the specialty for me for a lot of reasons. One is it combines inpatient and outpatient care. You get to establish long-term relationships with patients. For many of my patients, I'm probably the doctor that they see most often. You see people across the lifespan. And what I'm going to talk about today is for some people, you actually get to cure their disease, which at the time I was coming into neurology was something pretty rare. Dr Monteith: Yeah, that's great. Why don't you tell us, what were you thinking when you started writing the article? What did you set out to do? Dr Friedman: What I really wanted to do is to educate neurologists out there about the options that they have for their patients with epilepsy, especially those with difficult-to-treat or drug-resistant epilepsy, and give them the tools to communicate those options. Especially for them to understand the rationale, why we choose the interventions that we do as epileptologists, how to appropriately refer patients and have them be partners in that discussion with patients and families. One of the things that we have known for a long time is that the time to referral for things like epilepsy surgery is too long. You know, the average patient with drug resistant epilepsy who undergoes epilepsy surgery waits about twenty years. And for patients who could have curative therapy, you know, become seizure free, that's a lot of life years lost. If we can get patients to that potentially life-altering therapy earlier, that'd be great. Dr Monteith: Yeah, that is really impactful as you think about it. So why don't you tell us what the essential points of your article? Dr Friedman: The central point of my article is really that when patients have drug-resistant epilepsy, which means that our available anti-seizure medicines are not controlling their seizures to the degree that they need, there are other treatment options. Some of those are what we call curative, which means that they could stop their seizures entirely; and some of them are palliative, they could reduce the frequency or severity of seizures and improve quality of life and other outcomes. The other thing that I wanted to highlight was, in addition to these types of therapies, there are other tools we have at our disposal that can improve the quality of life and safety of our patients with epilepsy, including devices for seizure monitoring. Dr Monteith: And how do you define drug-resistant epilepsy? I feel like that could be a moving target. Dr Friedman: The International League Against Epilepsy actually set out to define it about a decade ago, and they defined it as patients who fail at least two appropriately selected anti-seizure medicines due to lack of efficacy. Then they're still having ongoing seizures. What does that mean? So, that means that the medicine that was chosen was appropriate for the type of seizures that they have, whether it's focal or generalized, and that it didn't work because of a lack of efficacy and not because of side effects. And we know from multiple studies that once patients fail two medications, the likelihood that the third, fourth, fifth, etcetera, medicine will control their seizures becomes smaller and smaller. It's not impossible, but the rates fall below five percent. And so we call those patients drug-resistant. Dr Monteith: So, it sounds like despite newer therapies, really things haven't changed in ten years. Dr Friedman: Yeah, unfortunately, at least when the concept was first investigated back in 2000 by Quan and Brody, they found that a third of patients were drug-resistant. When they went back in the mid-2010s to relook at these patients, despite the introduction of many new medications, the rate of patients who were drug-resistant was essentially unchanged. There may be therapies that are emerging or in development that may have better odds, but right now we don't really understand what makes people drug resistant and how we can target that. Dr Monteith: But you do raise a good point that this is about efficacy and not tolerability. And at least for some of the newer medications, they're better tolerated. If you stop the medicine because you had some side effect, that might change how that person has classified better-tolerated treatments. Dr Friedman: It's true. And better-tolerated treatments, you can potentially use higher doses. One of the things that is not in the definition of drug-resistant epilepsy, but as a practicing neurologist, we all know, is that the patients have to take the medicine for it to be effective. And unfortunately, they have to take it every day. And if the medicine makes them feel bad, they may choose not to take it, present to you as drug-resistant, when in reality they may be drug-sensitive if you got them on medicine that doesn't make them feel bad. Dr Monteith: So why don't we talk about patients that are ideal candidates for epilepsy surgery? Dr Friedman: The ideal candidates for epilepsy surgery… and I'll start by talking about curative epilepsy surgery, where the goal of the surgery is to make patients seizure-free. The best candidates are patients who have lesional epilepsy, meaning that there is a visible MRI abnormality like a focal cortical dysplasia, hippocampus sclerosis, cavernoma in a part of the brain that is safe to resect, non-eloquent, and where you can safely perform a wide margin of resection around that lesion. It helps if they have few or no generalized tonic-clonic seizures and a shorter duration of epilepsy. So the ideal patient, the patient that if they came to my office, I would say you should get surgery right now, are patients with non-dominant temporal lobe epilepsy of a few years' duration. So as soon as they've shown that they're not responding to two medicines, those are the ideal patients to say, you would have the most benefit and the least risk from epilepsy surgery. We know from studies that patients with temporal lobe epilepsy do a little better with surgery. We know patients who have a visible lesion on MRI do better with epilepsy surgery. We know that patients who have infrequent secondarily generalized seizures do better. But all patients with drug-resistant epilepsy should be considered for some form of surgery because even if they're not candidates for a curative surgery, there may be some palliative options, whether it's surgical resections that lessen the severity of their seizures or neurostimulation devices that reduce the frequency and severity of seizures. Ideal candidates, the ones that you would push through sooner rather than later, are those who have the likelihood of the best outcomes and the least risk of neurocognitive decline. Dr Monteith: So, you mentioned that there may be other candidates that still benefit, although maybe not ideal. You mentioned neuromodulation. What other interventions are available? Dr Friedman: For patients who are not candidates for resective surgery, there are several neurostimulation options. There's vagus nerve stimulation, which has been around the longest. It is a device that is implanted in- under the skin near the clavicle and has a lead that goes to the left vagus nerve and delivers stimulation, electrical stimulation to the nerve. For reasons we don't fully understand, it can reduce the both the frequency and severity of seizures. Seldom does it make people seizure free, but the reduction in seizure frequency for many patients is associated with improved quality of life, reduced risk of injury, and even reduced rates of SUDEP. We also have two intracranial neurostimulation devices we use for epilepsy. One is the responsive neurostimulator. So, this is a device that- it has leads that are implanted directly into the seizure focus and sense electrocortical brain activity and deliver electrical stimulation to attempt to abort abnormal brain activity. So functioning kind of like a cardiac defibrillator for the heart, but for seizures in the brain. And because these devices have two leads, they can be used to treat people with more than one seizure focus---so up to two---or be used in patients who are not candidates for resection because their seizure focus is in language cortex, motor cortex, things that would be unable to resect. And the RNS has somewhat better efficacy in terms of percent reduction in seizures compared to the VNS, but obviously because it's an intracranial device, it's also a little riskier. It has more potential for neurosurgical adverse effects. There's also a deep brain stimulator for epilepsies, the same exact device that we use to treat movement disorders. We can implant in the thalamus, in either the anterior nucleus of the thalamus or now, for some patients, into the central median nucleus of the thalamus, and deliver open loop stimulation to treat epilepsy and reduce the frequency and severity of seizures as well. Unlike the RNS, you don't have to localize the seizure focus, so you don't need to know exactly where the seizures are coming from. And you could treat patients with multifocal epilepsy with seizures coming from more than two locations or even generalized seizures. Dr Monteith: So, it sounds like there are a lot of options available to patients. I think one of the things I find challenging is when we have patients that may have some cognitive dysfunction, especially in the hospital, and they've had some seizures that are very obvious, but then there are these, maybe, events that you wonder are seizures. So, what is the utility of some of these seizure detection devices? Dr Friedman: The development of seizure detection devices started out primarily with the observation that a majority of cases of sudden unexpected death and epilepsy, or SUDEP, occurred following tonic-clonic seizures. And there was a need to be able to monitor for convulsive seizures, especially that occur at night when people were otherwise unattended. And so, the first generation of devices that were developed came on the market, essentially detected convulsive seizures, and they alerted caregivers nearby who are able to come to the bedside, provide basic seizure first aid, turn people on the side. And theoretically all this---this hasn't been shown in studies---prevents SUDEP. And so, the ones that are currently available on the market are focused on the detection of convulsive seizures, mostly generalized tonic-clonic seizures, but some devices can also detect other seizures with very prominent motor components. What we don't have yet available to us, and what people are working on, are devices that detect nonconvulsive seizures. We know that patients who have focal impaired aware seizures are often amnestic for their seizures. They don't know they had a seizure if family members aren't there to observe them. They may never report them, which makes treating these patients very difficult. How do you quantify disease burden in your headache patients, for instance? You say, how many headache days did you have since we last met in the clinic? Your patients will be able to report on their calendar, this many days. Well, imagine if the patients had no awareness of whether or not they had a headache day. You wouldn't know if your therapy is working or not. In epilepsy, we need those types of devices which can tell us whether patients are having seizures they're unaware of, and that may be more subtle than convulsions. Dr Monteith: Oh, that'd be great for headache, too. You just gave me an idea, but that's the next podcast. So, you mentioned SUDEP, really important. How good are surgical interventions at reducing what we would think the prevalence of SUDEP? Dr Friedman: For me that is one of the primary motivations for epilepsy surgery in patients who are drug-resistant, because we know that if patients who are candidates for epilepsy surgery have high SUDEP rates. Estimates range from six to nine per thousand patients per year. If surgery is successful, their mortality rates go down to the general population level. It literally can be lifesaving for some patients, especially when you're talking ab…

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    First Seizures, Acute Repetitive Seizures, and Status Epilepticus With Dr. David Vossler Mar 05, 2025
    Show notes

    Emergency treatment may be necessary after a person's first seizure or at the onset of abnormal acute repetitive (cluster) seizures; it is required for status epilepticus. Treatment for these emergencies is dictated by myriad clinical factors and informed by published guidance as well as emerging research. In this episode, Lyell K. Jones, MD, FAAN, speaks with David G. Vossler, MD, FAAN, FACNS, FAES, author of the article "First Seizures, Acute Repetitive Seizures, and Status Epilepticus," in the Continuum® February 2025 Epilepsy issue. Dr. Jones is the editor-in-chief of Continuum: Lifelong Learning in Neurology® and is a professor of neurology at Mayo Clinic in Rochester, Minnesota. Dr. Vossler a clinical professor of neurology at the University of Washington School of Medicine in Seattle, Washington. Additional Resources Read the article: First Seizures, Acute Repetitive Seizures, and Status Epilepticus Subscribe to Continuum: shop.lww.com/Continuum Earn CME (available only to AAN members): continpub.com/AudioCME Continuum® Aloud (verbatim audio-book style recordings of articles available only to Continuum® subscribers): continpub.com/Aloud More about the American Academy of Neurology: aan.com Social Media facebook.com/continuumcme @ContinuumAAN Host: @LyellJ Full episode transcript available here Dr Jones: This is Dr Lyell Jones, Editor-in-Chief of Continuum, the premier topic-based neurology clinical review and CME journal from the American Academy of Neurology. Thank you for joining us on Continuum Audio, which features conversations with Continuum's guest editors and authors who are the leading experts in their fields. Subscribers to the Continuum journal can read the full article or listen to verbatim recordings of the article and have access to exclusive interviews not featured on the podcast. Please visit the link in the episode notes for more information on the article, subscribing to the journal, and how to get CME. Dr Jones: This is Dr Lyell Jones, Editor-in-Chief of Continuum: Lifelong Learning in Neurology. Today, I'm interviewing Dr Dave Vossler, who has recently authored an article on emergent seizure management, taking care of patients with the first seizure, acute repetitive seizures, and status epilepticus, which is an article in our latest issue of Continuum covering all topics related to epilepsy. Dr Vossler is a neurologist at the University of Washington, where he's a clinical professor of neurology and has an active clinical and research practice in epileptology. Dr Vossler, welcome. Thank you for joining us today. Why don't you introduce yourself to our listeners? Dr Vossler: Thank you very much for the introduction, Lyell. It's a pleasure to speak with you on this podcast, and I hope to go over a lot of important new information in the management of seizure emergencies. As you said, I'm a clinical professor in neurology at University of Washington, been in medicine for many decades now and have published and done research in this area. So, I'm anxious to give you not only my academic experience, but also talk about my own management of patients with status epilepticus over the last four decades. Dr Jones: Yeah, that's fantastic. And I always appreciate hearing from experienced clinicians, and I think our readers and our listeners do appreciate that voice of clinical expertise. And I'll tell you this is a topic, you know, as a neurologist who doesn't see many patients with acute seizure emergencies in my own practice, I think this is a topic that gives many clinicians, including neurologists, some anxiety. Your article, Dr Vossler, is really chock-full of helpful and clinically relevant considerations in the acute management of seizures. So, you now have the full attention of a huge audience of mostly neurologists. What's the one most important practice change that you would like to see in the care of patients with either first or acute prolonged seizures? Dr Vossler: Without a doubt, the most important clinical takeaway with regard to the status epilepticus---and for status epilepticus, many, many clinical trials, research trials have been done over the last couple decades and they all consistently show the same thing, that by and large most patients who have status epilepticus are underdosed and undertreated and treated too slowly in the initial stages of the status epilepticus. And it's important to use full bolus dosages of benzodiazepines to prevent mortality, morbidity, and later disability of these patients. To prevent the respiratory depression, many physicians are afraid to use higher doses of benzodiazepines, even guideline-recommended doses of benzodiazepines for fear of respiratory depression. But it's actually counterintuitive. It turns out that most cases of respiratory depression are due to inadequate doses and due to the status epilepticus itself. We know there's greater mortality, we know there's greater morbidity and we know that there's greater need for higher dose, subsequent, anti-seizure medications, prolonged status, if we don't use the proper doses. So, we'll kind of go over that a little bit, but that is the one clinical takeaway that I really would like our listeners to have. Dr Jones: Let's follow that thread a little bit. Dave, I know obviously we will speak in hypotheticals here. We're not going to talk about actual patients, but I think we've all been in the clinical situation where you have a patient who comes into the emergency room usually who's actively seizing, unknown history, don't know much about the patient, don't know much about the circumstances of the onset of the seizure. But we now have a patient with prolonged convulsive seizures. How do we walk through that? What are the first steps in the management of that patient? Dr Vossler: Yeah, well, I'll try to be brief for the purposes of the podcast. We do, of course, go through all of that in detail in the Continuum article, which hopefully everybody will look at very carefully. Really in the first table, the very first table of the article, I go through the recommended guideline for the American Epilepsy Society on the management of what we call established status epilepticus. The scenario you're talking about is just exactly that: established status epilepticus. It's not sort of evolving or developing status. We're okay they're having a few seizures and we're kind of getting there. No, this patient is now having evidence of convulsive seizure activity and it's continuing or it's repeated seizures without recovery. And so, the first phase is definitely a benzodiazepine and then the second phase is then a longer-acting bolus of a drug like phosphenotoine, valproic acid or levetiracetam. I could get into the details about dosing of the benzodiazepines, but maybe I'll let you guide me on whether we wanted to get into that kind of detail right at the outset. It's going to be a little bit different. For children, its weight-based dosing, but for adults, whether you use lorazepam or you use diazepam or you use midazolam, the doses are a little bit different. But they are standardized, and gets back to this point that I made earlier, we're acting too slow. We're not getting these patients quick enough, for various reasons, and the doses that are most commonly used are below what the guidelines call for. Dr Jones: That's great to know, and I think it's fine for the details to refer our listeners to the article because there are great details in there about a step-by-step approach to the established status epilepticus. The nomenclature and the definitions have evolved, haven't they, Dr Vossler, over time? Refractory status epilepticus, new-onset refractory status epilepticus, super refractory status epilepticus. Tell us about those entities, how they're distinguished and how you approach those. Dr Vossler: That's an important thing to kind of go over. They- in 2015, the International League Against Epilepsy, ILAE, which is, again, our international organization that guides our understanding of all kinds of things epileptic in nature around the world. In 2015 they put out a definition of status epilepticus, but it used to be that patients had thirty minutes of continuous seizure activity or repetitive obvious motor seizures with impairment of awareness and they don't recover impairment between these seizures. And that goes on for thirty minutes. That was the old definition of status epilepticus. Now, the operational definition is five minutes. And I think that's key to understand that, after five minutes of this kind of overt seizure activity, you need to intervene. And that's what's called T1 in the 2015 guideline, the international guideline. There are a bunch of different axes in the classification of status that talk about semiology, etiology, EEG patterns, and what age group you're talking about. We won't really get into those in the Continuum article because that's really more detailed than a clinician really should be. Needing to think about the stages, what we call the stages of status epilepticus that you mentioned and I alluded to earlier are important. And that is sort of new nomenclature, and I think probably general neurologists and most emergency room physicians aren't familiar with those. So, it just briefly goes through those. Developing status epilepticus is where you're starting- the patient's starting to have more frequent seizures, and it's heading essentially in the wrong direction, if you will. Established status epilepticus, as I mentioned, is, you know, this seizure act, convulsive or major, major outward overt seizure activity lasting five minutes or more, at which time therapy needs to begin. Again, getting back to my point, what doesn't happen often enough is we're not- we're intervening too late. Third is refractory status epilepticus, which refers to status epilepticus which continues despite adequate doses of an initial benzodiazepine given parenterally followed by a full loading dose of a single non-sedating anti-seizure medicine, which today includes phosphenotoine IV valproic acid or IV levetiracetam. In the United States, and increasingly around the world, people really are using levetiracetam. First, it has some advantages. There's now proof from a class one NIH-funded trial. We know that these three drugs are equivalent at the full doses that I go over in the article. You have your kind of dealer's choice on those. Phenobarbital, which we used to use and I used as a resident as long as forty years ago, is really a second choice drug because of its sedating and other side effects. But around the world in resource-poor countries phenobarbital can be used and, in a pinch, certainly is an appropriate drug. And then finally, you mentioned super refractory status epilepticus and that's status that's persisting for more than twenty four hours. Now, despite initial benzo and non-sedating anti-seizure medicine, but also lasting more than twenty four hours while receiving an intravenous infusional sedating, anesthetizing anti-seizure medicine like ketamine, propofol, pentobarbital or midazolam drips. Dr Jones: So, it sounds like the definitions have evolved in a way that improves the outcomes, right? To do earlier identification of status epilepticus and more aggressive management, I think that's a great takeaway. If we move all the way to the other end of the spectrum, let's move to the ambulatory setting and we have a patient who comes in and they've had one seizure, they're an adult; one seizure, the first seizure. The key question is, how do we anticipate the risk of future seizures? But walk us through how you talk to that patient, how you evaluate that patient to decide if and when to start anti-seizure medicines. Dr Vossler: Well, it depends a little bit if it's an adult or a child, but the decision making process and the data behind it is pretty robust now. And the decision making process is pretty similar for adults and children, with some differences which I can talk about. First of all, first seizures. I think it's really important to stress that there's been so much research in this area. I'd like to get a cross point that they're not as innocuous as I think many general neurologists might suspect. We know that there is a two- to threefold increased risk of death in children and adults following a first seizure. Moreover, the risk of a second seizure, both in kids and adults, is about 36% two years after that first seizure. It's about 46% five years after that first seizure. It's really pretty substantial. The risk of a second seizure is increased twofold. It doubled in the presence of any kind of a history of prior brain insults that could result in seizures. Could be infections, it could be a prior stroke, it could be prior significant brain trauma. It's also doubled in the presence of an EEG, which shows epileptiform discharges like spikes and sharp waves---and not just a sort of borderline things like sharply contoured rhythmic Theta activity. That's really not what we're talking about. We're talking about overt epileptiform discharges. It's doubled in the presence of lesion that can be seen on imaging studies, and it's doubled in the presence of seizures if that first seizure occurs during sleep. So, we have a number of things that double the risks, above the risk of a second seizure, above that 36% at two years and 46% at five years that I spoke about. And so those things need to be considered when you're counseling a patient about that. Should you be on an anti-seizure medicine after that first seizure? Specifically, to the point of anti-seizure medications, the guideline that was done, the 2015 guideline that was done by the American Academy of Neurology for adults, and the 2003 guideline was actually a practice parameter that was done by the Academy and the American Epilepsy Society for children, are really kind of out of date. They talk about the adverse effects of anti-seizure medications, but when you look back at the studies that were included in developing that practice parameter for kids and guidelines for adults, they are the old drugs: carbamazepine, phenytoin, phenobarbital and valproate. Well, I don't think I need to tell this audience, this well-educated audience, that we don't use those drugs anymore. We are using more modern anti-seizure medicines that have been developed since 1995; things like lamotrigine, levetiracetam, and lecosamide. Those three in particular have very low adverse events. So, the guideline that the Academy, American Academy Neurology and American Epilepsy Society put together for kids and for adults talks about this high adverse event profile. And so, you need to take a look at the risks that I talked about of a seizure recurrence and balance that against adverse effects. But I'm here to tell you that the newer anti-seizure medicines---and by newer I'm talking in the last thirty years since lamotrigine was approved in 1995---these drugs have much better side effect profiles. And I think all epileptologists would agree with that. They're not necessarily more effective, but they are better tolerated. That makes the discussion of the risk of a second seizure, the risk of mortality versus side effects of drugs, it really pushes the risk category higher on the first side and not on the side of drugs. We know that if you take an anti-seizure medicine, you reduce your risk of a second seizure by half. Now, that's not sustained over five years, but over the first two years, you've reduc…

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    Epilepsy Genetics With Dr. Sudha Kessler Feb 26, 2025
    Show notes

    Genetic testing plays a key role in the evaluation of epilepsy patients. With the expanding number of choices for genetic tests and the complexity of interpretation of results, genetic literacy and knowledge of the most common genetic epilepsies are important for high-quality clinical practice. In this episode, Gordon Smith, MD, FAAN speaks Sudha Kilaru Kessler, MD, MSCE, author of the article "Epilepsy Genetics," in the Continuum February 2025 Epilepsy issue. Dr. Smith is a Continuum® Audio interviewer and a professor and chair of neurology at Kenneth and Dianne Wright Distinguished Chair in Clinical and Translational Research at Virginia Commonwealth University in Richmond, Virginia. Dr. Kessler is an associate professor of neurology and pediatrics at Perelman School of Medicine at the University of Pennsylvania and Children's Hospital of Philadelphia in Philadelphia, Pennsylvania. ADDITIONAL RESOURCES Read the article: Epilepsy Genetics Subscribe to Continuum: shop.lww.com/Continuum Earn CME (available only to AAN members): continpub.com/AudioCME Continuum® Aloud (verbatim audio-book style recordings of articles available only to Continuum® subscribers): continpub.com/Aloud More about the Academy of Neurology: aan.com SOCIAL MEDIA facebook.com/continuumcme @ContinuumAAN Host: @gordonsmithMD Full episode transcript available here Dr Jones: This is Dr Lyell Jones, Editor-in-Chief of Continuum, the premier topic-based neurology clinical review and CME journal from the American Academy of Neurology. Thank you for joining us on Continuum Audio, which features conversations with Continuum's guest editors and authors who are the leading experts in their fields. Subscribers to the Continuum journal can read the full article or listen to verbatim recordings of the article and have access to exclusive interviews not featured on the podcast. Please visit the link in the episode notes for more information on the article, subscribing to the journal, and how to get CME. Dr Smith: Hello, this is Dr Gordon Smith. Today I've got the great pleasure of interviewing Dr Sudha Kessler about her article on epilepsy genetics, which appears in the February 2025 Continuum issue on epilepsy. Sudha, welcome to the podcast and please introduce yourself to our audience. Dr Kessler: Oh, thank you so much. I'm Sudha Kessler. I am a pediatric epileptologist here at the Children's Hospital of Philadelphia and the University of Pennsylvania. Dr Smith: Tell us a little bit about yourself. Are you a geneticist too, or how did you get into this particular topic? Dr Kessler: Yes, I want to emphatically say that I am not a geneticist. I'm not an expert in epilepsy genetics at all. I take care of all sorts of patients with epilepsy. I actually do mostly epilepsy surgery-related care. But this part of epilepsy is, every year, increasingly important to our everyday practice. And I think it's fascinating, often a little daunting. I think I was asked to get involved with this article as a non-expert to help translate from the experts to the rest of us. Dr Smith: We're going to get there, because one of the things you do a really good job of in the article is talking about genetic concepts that are germane to everything we do. And I think you're an expert. You do it in a way that I understood. So, I'd like to get there, but- and this is a really hot area. For instance, I really loved your figure that shows the arc of discovery of genetic causes for epilepsy. It's really breathtaking, something we wouldn't have thought possible that long ago. And it's also a lot to digest. And so, I wonder if maybe we can begin by thinking about a framework and, for instance, you talk about these different groups of disorders. And one that seems to be particularly impacted by this unbelievable A-rated discovery. Our developmental and epileptic encephalopathies, or DEEs. What can you tell our listeners about that group of disorders? Dr Kessler: Sure. I think that, you know, most of what we think about in epilepsy genetics now has to do with disorders that are attributable to changes in a single gene. Genetics is obviously much more complicated than that, but that's still where we are in the stage of discovery. And the graph in the article is definitely one to take a look at because it represents the explosion that we've had in our understanding of single gene disorders leading to epilepsy and related manifestations. The DEEs are a group of disorders where any individual disorder is fairly rare, but as a group they are not that rare, and very impactful because they often cause epilepsy at a very young age. And either as a consequence of seizures or as a consequence of the underlying pathophysiology of that gene change, they are typically associated with really significant developmental impairments for a child 's entire life. Dr Smith: My understanding is that there's therapeutic development going on in this space. So, the early recognition of these genetic testing offers the promise of very impactful treatment---like we now do for SMA, for instance---early in the disease course. Dr Kessler: I think that's right. That's one of the most exciting parts of this field is that so much, just around the corner, for drug development, therapy development in this area. And as you can imagine, with a lot of these disorders, earlier intervention is likely to be much more impactful than later intervention when a lot of the developmental consequences are sort of… you know, when the cat 's already out of the bag, so to speak. Dr Smith: Yeah. So, this is really transformational and something that everyone who takes care of kids with epilepsy needs to know about, it seems. So on the other extreme, I guess, there are the self-limited epilepsies. I didn't really know about this in terms of genetic discovery, but can you talk about those disorders? Dr Kessler: Yeah, sure. I mean, I think some of these are the classic childhood epilepsy syndromes that we think about like childhood absence epilepsy or what we used to call benign romantic epilepsy and now call self-limited epilepsy of childhood with centrotemporal spikes. It's a mouthful, shortened to SeLECTS. Those are the epilepsies that occur typically in previously healthy children, that affects them for a few years and often remits so that epilepsy is just age-limited and doesn't continue for life. They clearly have genetic influences because they tend to run in families, but the genetics of them is not generally single gene associated. And so, we haven't actually explained why most of those kids actually get epilepsy. I think that'll be sort of another interesting area of discovery that will help us even understand some really fundamental things about epilepsy, like, why does this syndrome start at this age and tend to resolve by adolescence? Dr Smith: And the other thing I found interesting is disorders that I might have thought going into it would have a defined genetic cause or some of the disorders that there are not. So JME, for instance, or childhood absence, which is a little counterintuitive. Dr Kessler: It's completely counterintuitive. We call them genetic generalized epilepsies, and we know that they run in families, but we still know so little. I would say of all of the disorders that are mentioned in this article, that is the group where I think we have explained the genetic underpinnings the least well. Dr Smith: Yeah. Isn't that interesting? It's… wasn't it Yogi Berra who said, it's hard to predict things, particularly the future? So… Dr Kessler: Yes. Dr Smith: Who would have thought? So, we've talked a lot about kids. What about adults? You know, what role does genetic testing play in adults who have unexplained epilepsy? Dr Kessler: Yeah, I think that that is also a really important emerging area of knowledge. I think many epileptologists may think of genetic epilepsy as being solely pediatric. There are definitely not how many of these disorders can manifest for the first time in adulthood. Not only that, many of our children with childhood onset epilepsy that is due to a genetic problem grow up to become adults and will then need adult epilepsy care. In order to take care of both of those groups, it's really important for all epileptologists, including those that take care of adults, to have some knowledge of the potential impact of genetic testing. And how do you even approach thinking about it? Dr Smith: The message I guess I'm getting is if our listeners take care of patients with epilepsy, no matter how old those patients are, they need to be familiar with this. And the other message I'm getting is, it sounds like there are a lot of patients who really need genetic testing. And this came through in one aspect of your article that I found really interesting, right? So, what are the recommendations on genetic testing? So, the National Society of Genetic Counselors, as I understand it, said everyone needs genetic testing, right? Which I mean, they're genetic counselors, so. Which is great. In the International League Against Epilepsy, they recommended a more targeted approach. So, what's your recommendation? Should we be testing anyone with unexplained epilepsy, or should we be focusing on particular populations? Dr Kessler: Well, I guess I think about it as a gradation. There are certain populations that really deserve genetic testing, where it is going to be absolutely critical. You know, it's very likely that it will be critical knowledge to their care. If you diagnose somebody with epilepsy and you do imaging and that imaging does not reveal an answer, meaning you don't see a tumor or you don't see an old stroke or some other sort of acquired lesion, the next pillar of testing for understanding underlying etiology is genetic testing. That is the point at which I typically send my patients, and that's whether they're refractory or not. I think in the past some people felt that only patients with refractory epilepsy deserve or require testing. I think the reason why not to limit it to that population is that what's on a person's mind with epilepsy, or a family's mind with epilepsy, is what's going to happen to my child or to me in the future? And if genetic testing can shed some light on that, that will have a huge impact on that person's life. Dr Smith: You've got great cases in your article, which, I just want to give you a compliment. The information and entertainment, frankly, for per page: off the charts. It's not a long article, packed with useful information. And, I mean, some of your cases are great examples of patients who are heading down the surgical epilepsy path and you discovered, nope, there's a genetic cause that really impacted their care. What's the yield, right? The number of patients that you send genetic testing on for epilepsy, what percentage come back positive for a relevant sequence variant that you think is either causing or contributing to their epilepsy? Dr Kessler: That's a great question. I think that is actually still in flux because it depends on the population of patients that are being sent for testing, obviously, and then also on what testing is being done. So, I know in at least one large recent meta-analysis, the overall yield was 17%. And somebody hearing that number might think, oh, that's not very high, but it's actually very comparable to the yield for imaging. And we all do MRIs and patients that have new-onset epilepsy where the yield of MRI testing is about 20% or so. So, quite comparable. And then with children with DEEs, the yield is much, much higher than that. Dr Smith: So, 17% is actually a really great diagnostic yield. When I think of my yield and doing genetic testing on patients who have an axonal CMT phenotype, right? I mean that's better than what I get. So, good for you. That's exciting. Dr Kessler: It's interesting. I think that maybe an assumption might be that you're working somebody up. You do a genetic test, it reveals a difference, and thus surgery is off the table. It's actually quite different than the head, which is that some results may make surgery be even more "on the table" because you might find a gene that is known to be associated with a propensity to vocal cortical dysplasia, for example. And you may take a good second look at that person's MRI imaging or do other imaging to reveal the MRI invisible vocal cortical dysplasia. Dr Smith: Outstanding point. Let's talk a little more about the genetic testing itself. So, we've got all these genes. We understand when to test. What do you do? For instance, last night I just looked at the company that we use for most of our neuromuscular testing and they have a genetic epilepsy next gen panel with, I don't know, three hundred and twenty genes, right? Do you use that kind of panel? Do you go directly to a whole EXO? What's the right approach? Dr Kessler: Yeah, I think that that is quite dynamic right now, meaning that recommendations seem to change often enough that I rely on help. I have the enormous good luck of working here at CHOP where there is a fantastic epilepsy genetics group that I can easily refer to, and I know not everyone has that resource. The current recommendation is to start with an exome if that is available and is covered by that patient's insurance. When exome is not available, then the next best thing is a gene panel. You know, in recent years there have been a lot of sponsored gene panels, meaning free to the patient, administered by a company that then, you know, has other uses for compiled or grouped genetic data. And I think that as long as all of that can be clearly explained to a patient, and- along with all of the other things so you have to explain to a patient before doing genetic testing, about the pluses and minuses of doing it, I think that you sort of go for the best test you can that's available to that patient. Dr Smith: The sponsored programs can be very, very helpful, particularly from a payer or a patient payment perspective. And so, I guess the lesson there is it's great if you got the resources and CHOP to help you decide, but better to get whatever panel you can get than to do nothing; or, of course, refer to a center if you're not comfortable. Dr Kessler: And also, just know that these things change often enough that if it's been a couple of years and you might want to recheck whether the EXO is available to that patient or whether a gene panel can be sent that includes more than they had eight years ago. Dr Smith: So, are there situations to go to the other extreme where you just do targeted sanger sequencing? Like, just sequence the specific gene of interest? Dr Kessler: Yeah, absolutely. I'm still a big proponent of thinking clinically about a patient. If there are clues in that patient's history, exam, imaging, anything that gives you some sense of the disorder that this patient might have. And I think a classic example would be tuberous sclerosis. If you see an infant who has new onset spasms, you see hypopigmented macules on their skin and their MRI shows a tuber, you know, also known as a focal cortical dysplasia, then sure, send the targeted sequencing for the TSC1 and TSC2 genes. Dr Smith: And Rett syndrome? Dr Kessler: And Rett syndrome would be another example. And there are many examples where, if you feel like you have a good sense of what the disorder is, I think it's completely acceptable to send the targeted testing. Dr Smith: So, I'm going to get further down the rabbit hole and get to from easier to harder. I always get confused about things like chromos…

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    Neuroimaging in Epilepsy With Dr. Christopher Skidmore Feb 19, 2025
    Show notes

    Neuroimaging is a tool to classify and ascertain the etiology of epilepsy in people with first or recurrent unprovoked seizures. In addition, imaging may help predict the response to treatment. To maximize diagnostic power, it is essential to order the correct imaging sequences. In this episode, Aaron Berkowitz, MD, PhD, FAAN speaks with Christopher T. Skidmore, MD, author of the article "Neuroimaging in Epilepsy," in the Continuum February 2025 Epilepsy issue. Dr. Berkowitz is a Continuum® Audio interviewer and professor of clinical neurology at the University of California, San Francisco Dr. Skidmore is an associate professor of neurology and vice-chair for clinical affairs at Thomas Jefferson University, Department of Neurology in Philadelphia, Pennsylvania. Additional Resources Read the article: Neuroimaging in Epilepsy Subscribe to Continuum: shop.lww.com/Continuum Earn CME (available only to AAN members): continpub.com/AudioCME Continuum® Aloud (verbatim audio-book style recordings of articles available only to Continuum® subscribers): continpub.com/Aloud More about the American Academy of Neurology: aan.com Social Media facebook.com/continuumcme @ContinuumAAN Host: @AaronLBerkowitz Guest: @ctskidmore Full episode transcript available here Dr Jones: This is Dr Lyell Jones, Editor-in-Chief of Continuum, the premier topic-based neurology clinical review and CME journal from the American Academy of Neurology. Thank you for joining us on Continuum Audio, which features conversations with Continuum's guest editors and authors who are the leading experts in their fields. Subscribers to the Continuum journal can read the full article or listen to verbatim recordings of the article and have access to exclusive interviews not featured on the podcast. Please visit the link in the episode notes for more information on the article, subscribing to the journal, and how to get CME. Dr Berkowitz: This is Dr Aaron Berkowitz, and today I'm interviewing Dr Christopher Skidmore about his article on neuroimaging in epilepsy, which appears in the February 2025 Continuum issue on epilepsy. Welcome to the podcast, Dr Skidmore. Would you please introduce yourself to our audience? Dr Skidmore: Thank you for having me today. I'm happy to talk to you, Dr Berkowitz. My name is Christopher Skidmore. I'm an associate professor of neurology at Thomas Jefferson University in Philadelphia. I'm a member of the Jefferson Comprehensive Epilepsy Center and also serve as the vice chair of clinical affairs for the department. Dr Berkowitz: Thank you very much for joining us and for this fantastic article. It's very comprehensive, detailed, a very helpful review of the various types of brain pathology that can lead to epilepsy with very helpful images and descriptions of some of the more common findings like mesial temporal sclerosis and some of the less common ones such as cortical malformations, heterotopia, ganglioglioma, DNET. So, I encourage all of our listeners to read your article and take a close look at those images. So, hopefully you can recognize some of these findings on patients' neuroimaging studies, or if you're studying for the right or the boards, you can recognize some of these less common congenital malformations that can present in childhood or adulthood with epilepsy. In our interview today, what I'd like to do is focus on some practical tips to approaching, ordering, and reviewing different neuroimaging studies in patients with epilepsy. So to start, what's your approach when you're reviewing an MRI for a patient with a first seizure or epilepsy? What sequence do you begin with and why, how do you proceed through the different sequences and planes? What exactly are you looking for? Dr Skidmore: It's an important question. And I think to even take a step back, I think it's really important, when we're ordering the MRI, we really need to be specific and make sure that we're mentioning the words seizures and epilepsy because many radiology centers and many medical centers have different imaging protocols for seizure and epilepsy patients as compared to, like, a stroke patient or a brain tumor patient. I think first off, we really need to make sure that's in the order, so that way the radiologist can properly protocol it. Once I get an image, though, I treat an MRI just like I would a CAT scan approach with any patient, which is to always approach it in the same fashion. So, top down, if I'm looking at an axial image. If I'm looking at a coronal image, I might start at the front of the head and go to the back of the head. And I think taking that very organized approach and looking at the whole brain in total first and looking across the flare image, a T2-weighted image and a T1-weighted image in those different planes, I think it's important to look for as many lesions as you can find. And then using your clinical history. I mean, that's the value of being a neurologist, is that we have the clinical history, we have the neurological exam, we have the history of the seizure semiology that can might tell us, hey, this might be a temporal lobe seizure or hey, I'm thinking about a frontal lobe abnormality. And then that's the advantage that we often have over the radiologist that we can then take that history, that exam, and apply it to the imaging study that we're looking at and then really focus in on those areas. But I think it's important, and as I've illustrated in a few of the cases in the chapter, is that don't just focus on that one spot. You really still need to look at the whole brain to see if there's any other abnormalities as well. Dr Berkowitz: Great, that's a very helpful approach. Lots of pearls there for how to look at the imaging in different planes with different sequences, comparing different structures to each other. Correspondent reminder, listeners, to look at your paper. That's certainly a case where a picture is worth a thousand words, isn't it, where we can describe these. But looking at some of the examples in your paper, I think, will be very helpful as well. So, you mentioned mentioning to the neuroradiologist that we're looking for a cause of seizures or epilepsy and epilepsy protocols or MRI. What is sort of the nature of those protocols if there's not a quote unquote "ready-made" one at someone 's center in their practice or in their local MRI center? What types of things can be communicated to the radiologist as far as particular sequences or types of images that are helpful in this scenario? Dr Skidmore: I spent a fair amount of time in the article going over the specific MRI protocol that was designed by the International League Against Epilepsy. But what I look for in an epilepsy protocol is a high-resolution T2 coronal, a T2 flare weighted image that really traverses the entire temporal lobe from the temporal tip all the way back to the most posterior aspects of the temporal lobe, kind of extending into the occipital lobe a little bit. I also want to see a high resolution. In our center, it's usually a T1 coronal image that images the entire brain with a very, very thin slice, and usually around two millimeters with no gaps. As many of our neurology colleagues are aware, when you get a standard MRI of the brain for a stroke or a brain tumor, you're going to have a relatively thick slice, anywhere from five to eight millimeters, and you're actually typically going to have a gap that's about comparable, five to eight millimeters. That works well for large lesions, strokes, and big brain tumors, but for some of the tiny lesions that we're talking about that can cause intractable epilepsy, you can have a focal cortical dysplasia that's literally eight- under eight millimeters in size. And so, making sure you have that nice T1-weighted image, very thin slices with no gaps, I think is critical to make sure we don't miss these more subtle abnormalities. Dr Berkowitz: Some of the entities you describe in your paper may be subtle and more familiar to pediatric neurologists or specialized pediatric neuroradiologists. It may be more challenging for adult neurologists and adult neuradiologists to recognize, such as some of the various congenital brain malformations that you mentioned. What's your approach to looking for these? Which sequences do you focus on, which planes? How do you use the patient 's clinical history and EEG findings to guide your review of the imaging? Dr Skidmore: It's very important, and the reason we're always looking for a lesion---especially in patients that we're thinking about epilepsy surgery---is because we know if there is a lesion, it increases the likelihood that epilepsy surgery is going to be successful. The approach is basically, as I mentioned a little bit before, is take all the information you have available to you. Is the seizure semiology, is it a hyper motor semiology or hyperkinetic semiology suggestive of frontal lobe epilepsy? Or is it a classic abdominal rising aura with automatisms, whether they be manual or oral automatisms, suggesting mesial temporal lobe epilepsy? And so, take that clinical history that you have to help start to hone your eye into those individual locations. But then, once you're kind of looking in these nonlesional cases, you're also then looking at the EEG and where their temporal lobe spikes, where their frontal lobe spikes, you know, using that and pulling that information in. If they saw a neuropsychologist pulling in the information in from the neuropsychological evaluation; if they have severe reductions in verbal memory, you know, focusing on the dominant temporal lobe. So, in a right-handed individual, typically the left temporal lobe. And kind of then really spending a lot of time going slice at a time, very slowly, because in some of these vocal-cortical dysplasias it can be just the blurring of the gray-white margin. What I find easiest is to identify that gray-white margin and almost track it. Like, you use the mouse to kind of track it around and say, can I outline the exact border of the gray white margin in the frontal lobe that I'm interested in or the temporal lobe that I'm interested in, kind of looking for those subtle abnormalities. Often as neurologists, we don't have the luxury of being able to immediately reformat. As I mentioned, our T1 volume acquisition study is done in the coronal plane, but sometimes you might want it in the axial plane. And so, I might reach out to the radiologist and say, hey, can you reformat this in the axial plane because I'm interested in the frontal lobe epilepsy and it's a little bit better at looking at it in that plane? And I'll have them reformat and put it back on the pack so I can look at it in that manner. And so that's a, kind of another strategy is to take what you have, but also then go back to the radiologist and say, I need to look at it this a different way. Can you reformat it for me? Looking for that gray-white matter junction is the nice way to pick up for kind of subtle cortical dysplasias. And then when you see an abnormality, to be able to put the T1, the T2, and the flare image all up next to each other and use the technology built into most of our browsers to put on what's called the localizer mode, where I can highlight a specific spot that I'm seeing on the T1 and then very easily quickly see, what does it look like on the T2? What does it look like on the flare? To kind of quickly decide, is it a true abnormality or am I only seeing it on one slice because of an artifact on that one imaging sequence? And I think that's the biggest kind of key is to make sure, is it an artifact or is it not an artifact? That's kind of the most common thing that we, I think, get confused with. Dr Berkowitz: So, some very helpful pearls there in terms of reviewing the imaging, being in dialogue with our neuroradiology colleagues to think about potentially reacquiring certain images on certain planes or looking at the images with our neuroradiology colleagues to let them know more about the clinical history and where we're sort of zooming in about possible abnormalities. Dr Skidmore: I would just add in there that when looking at especially the mesial temporal structures, because of a lot of artifacts that can be present in an individual MRI machine, it's not uncommon that the mesial temporal structure will appear brighter because of an MRI magnet artifact. And so, it's a good key to look at the hippocampus compared to the insula. And so, the hippocampus and the insula should have similar signal characteristics. You're seeing the hippocampus is bright, but the insula ipsilateral to it's normal intensity. That would suggest that that's probably a true hyperintensity on the flare-weighted image as opposed to if both are bright, unless you're suspecting a hemispheric abnormality, it's more likely to be a kind of artifact in the MRI machine. Dr Berkowitz: Okay. Those are really helpful tips, not just to analyze the hippocampus and medial temporal lobe itself---let's remember our anatomy and the circuit of Papez---and to look at associated structures for supporting evidence of a possible abnormality in the hippocampus itself. It looks like there may be something subtle. We can use some additional information from the image to try to decide if that is real or artifactual, and of course correlating with the clinical picture and EEG. I'd like to talk briefly now about some other imaging modalities that you discuss in your paper, the use of functional imaging such as PET, SPECT and fMRI. Let's talk a bit about each of these. When would you order a PET scan for a patient with epilepsy? What would you be looking for and how would you be using that to make clinical decisions? Dr Skidmore: Yeah, so these functional imaging modalities are really utilized when we're evaluating somebody that's not responding to medications. So, they're medically intractable, and we're wondering, could they be a candidate for epilepsy surgery? And so, most of these imaging modalities are really relegated to the world of epileptologists at surgical epilepsy centers. I wanted to include them, though, in the article because I do think it's important for general neurologists to understand kind of what they are, because invariably a patient sees me and then they go back to their general neurology and be like, hey, Doctor Skidmore said I had this PET scan abnormality. What do you think? So, I think it's a good idea for general neurologists to kind of understand them. So, probably the oldest that we've utilized is the FDG PET scan, basically looking at fluorodeoxyglucose and the brain's utilization of glucose. As we all remember, again, glucose is the primary molecule for energy and ATP production in the brain. And so basically, by injecting radioactive glucose in the interictal state--- so not during a seizure but in between seizures---areas of the brain that are not taking up the radiotracer will show as being hypometabolic. So, low metabolism. And hypometabolic regions in the interictal state have been associated with onset regions for epileptic seizures. Let's say you have a patient clinical history, you think they have temporal of epilepsy, EEG suggests temporal of epilepsy, but the MRI is nonlesional, meaning there's no abnormality that anybody could appreciate even at a 3 Tesla scanner. We'll get an FDG PET scan and see, is there hypo metabolism in that temporal lobe of interest? And if there is, well, that's been shown through several published papers, that's just as valuable as…

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    EEG in Epilepsy With Dr. Daniel Weber Feb 12, 2025
    Show notes

    EEG is the single most useful ancillary test to support the clinical diagnosis of epilepsy, but if used incorrectly it can lead to misdiagnosis and long-term mental and physical health sequelae. Its application requires proper understanding of its limitations and variability of testing results. In this episode, Katie Grouse, MD, FAAN, speaks with Daniel Weber, DO, author of the article "EEG in Epilepsy," in the Continuum® February 2025 Epilepsy issue. Dr. Grouse is a Continuum® Audio interviewer and a clinical assistant professor at the University of California San Francisco in San Francisco, California. Dr. Weber is the director of adult epilepsy and vice chair of clinical affairs at the St. Louis University in St. Louis, Missouri. Additional Resources Read the article: EEG in Epilepsy Subscribe to Continuum: shop.lww.com/Continuum Earn CME (available only to AAN members): continpub.com/AudioCME Continuum® Aloud (verbatim audio-book style recordings of articles available only to Continuum® subscribers): continpub.com/Aloud More about the American Academy of Neurology: aan.com Social Media facebook.com/continuumcme @ContinuumAAN Guest: @drdanielweber Full episode transcript available here Dr Jones: This is Dr Lyell Jones, Editor-in-Chief of Continuum, the premier topic-based neurology clinical review and CME journal from the American Academy of Neurology. Thank you for joining us on Continuum Audio, which features conversations with Continuum's guest editors and authors who are the leading experts in their fields. Subscribers to the Continuum journal can read the full article or listen to verbatim recordings of the article and have access to exclusive interviews not featured on the podcast. Please visit the link in the episode notes for more information on the article, subscribing to the journal, and how to get CME. Dr Grouse: This is Dr Katie Grouse. Today, I'm interviewing Dr Daniel Weber about his article on EEG and epilepsy, which appears in the February 2025 Continuum issue on epilepsy. Welcome to the podcast and please introduce yourself to our audience. Dr Weber: Hi, thanks for having me. My name is Dan Weber and I'm an epileptologist at Saint Louis University. I direct the adult epilepsy program here and also serve as the vice chair for Clinical Affairs. Been my pleasure to work on this article. Dr Grouse: I'm so happy to have you today. I read your article. I found it to be incredibly useful as someone who often orders EEG in the general neurology clinic. So, I wanted to start with asking, what is the most clinically relevant message or takeaway from your article that you'd really like neurologists to know? Dr Weber: Yes, when I was asked to write this article, I looked back at the previous Continuum on epilepsy and just the general literature. And there's a lot of good articles and books out there on EEG and epilepsy and sort of giving you a primer on what you might see and how to interpret it. So, we wanted to try to go a slightly different direction. This article gives you some of that gives you the background of EEG and some of the basic things that you may see, but the real thrust of it is more about the limitations of EEG in the clinical picture of epilepsy and common things you might avoid. There are some things that we get hammered into our brains in training that aren't always true and there's plenty of examples in the literature to review, and this article sort of tries to encapsulate as many of those as possible in a digestible format. The main takeaway would be that EEG is an extremely helpful tool in the diagnosis of epilepsy, is the best tool we have to help supplement your clinical acumen. But it does not make the diagnosis of epilepsy. And there are certain circumstances when it may not be as helpful as you may have been led to believe in residency. Dr Grouse: Maybe not the most comforting of messages, but certainly an important one, very important to learn more about this. So, we appreciate that. Can you tell us your decision-making process when deciding whether to order a routine EEG, an extended EEG, prolonged ambulatory EEG, or inpatient video EEG? Dr Weber: Sure. So, it's a multi-part question because each one, I think, has a different clinical scenario. In the current state, our best data for estimating risk of recurrence after an initial seizure comes with routine EEG abnormalities. So, often I will order routine EEGs in those scenarios. So new patient presentation, new patients coming in with an initial seizure who want to know what's their risk of recurrence. So, risk stratification, I use a lot of routine EEG for, often sleep deprived if possible to increase the sensitivity. If you'd like, the extended EEG does offer higher sensitivity, or you can repeat the routine EEG if the first routine EEG is nonconclusive. For generally extended EEGs, I tend to order them in my practice if patients have come to see me with a suspected diagnosis of epilepsy but haven't yet had any electrographic confirmation. Maybe they've already had routine EEGs done in the past, so we'll try to obtain just a little more data. The longer-term EEGs I tend to use in different clinical scenarios, in patients usually who already have established diagnosis or people who have become refractory and we haven't yet confirmed their diagnosis. I tend to do inpatient EEGs in those situations. Ambulatory EEGs I do more when there are certain characteristics of the patient or the patient 's presentation that may not fit well on the inpatient side. Patients who are reliant on substances who can't use while they're inpatient and may have withdrawal effects complicating the stay. Or people who have a strong activation component to their epilepsy where activity really draws it out, certain activities that they do at home that they might not do during the inpatient stay. Those are the sorts of people I'll do ambulatory EEGs on. There are a couple other scenarios as well that come up less commonly, but everything has its own little niche. Dr Grouse: That's a really helpful review as we sort of think about which way we want to go as we're working up our patients in the inventory setting. Can you tell me a little more about the difference between sensitivity of, for instance, doing maybe two routine EEGS versus prolonged ambulatory EEG? Dr Weber: Generally speaking, the longer you're recording someone's brain waves, the higher the sensitivity is going to be. So routine EEG is twenty to forty minutes at most places. One of those gives you a certain sensitivity. More of them will give you more sensitivity. And there was a recent study highlighted in the article that compared routine EEGs to initial multi-day ambulatory EEG, and the ambulatory EEG obviously, as would be expected, has a higher sensitivity than either of the routines. So, there may be some cases with that initial evaluation where an ambulatory EEG may be held and we get into that in more detail in the article. But with the caveat, a lot of this article is about limitations, and the data that we have to talk about increased risk of recurrence was based off seeing epileptic form discharges on routine EEG. So you could hypothesize that if you only have one epileptic form discharge in three days on an ambulatory EEG, that may not carry the same recurrent significance as catching one on a twenty minute EEG. But we don't have that knowledge. Dr Grouse: Getting a little bit more into what you mentioned about the limitations, when is the scalp EEG less useful or limited in the evaluation of epilepsy? Dr Weber: So, one thing I see a lot in my residence at here and other places where I've worked is, I get them very excited about EEG and they may order it a bit too much. So, if patients have a known, established diagnosis of epilepsy, electrographically confirmed, and they come in with a breakthrough seizure and they're back to their baseline, there's really not a strong reason to get an EEG. We often seem to in the emergency department as part of our evaluation, but we already know what happened to the patient. The patient's not doing poorly right now, so the EEG is not going to give you any additional information. Just like really any test, you should think, what are the possible outcomes of this test and how would those outcomes alter the care of this patient? And if no outcome is going to affect the care of the patient or give you any additional diagnostic information, then probably don't need to be doing that test. Dr Grouse: This is probably a good segue into asking, what is an area of confusion or common pitfalls that you've seen in the clinical application of EEG and epilepsy? Dr Weber: So, a lot of times on the inpatient service, we'll get longer-term EEGs for patients who are having spells that are occurrent while they're in the ICU or other places or altered in some way, encephalopathic. And these patients will have their spell, and in my report, I'll say that there is not any electrographic correlate. So, there's no EEG finding that goes along with the movement that they're doing that's concerning for a seizure. And that doesn't always mean that it's not an epileptic seizure. An EEG is not a one-hundred-percent tool. Epilepsy and seizures are a clinical diagnosis. The EEG is a helpful tool to guide that diagnosis, but it is not foolproof, so you need to take the whole clinical picture into account. Particularly focal seizures without impaired awareness often can be electrographically silent on surface EEG. If you see something that looks clinically like a seizure but doesn't show up on the EEG, there are circumstances that they get to in the paper a little bit where that can still be an epileptic seizure. And you just have to be aware of the limitations of the tests that you're ordering and always fall back on the clinical skills that you've learned. Dr Grouse: Are there any tips or tricks you can suggest to improve the clinical utility of EEG for diagnosis of epilepsy? And also thinking about the example you just gave, but maybe other cases as well? Dr Weber: Again, definitely need to incorporate EEG as part of a larger picture. The video component of EEG is incredibly helpful. You can't interpret EEG in isolation. Regardless of what the EEG shows, you can't make a diagnosis of epilepsy, but you certainly can be very suspicious of one. So, in those cases where you have a high suspicion for an epileptic seizure and the EEG has not given you any confirmatory evidence, it's really helpful to rely on any clinical expertise that you have access to. So, people who have seen lots of seizures may be helpful in that situation. Getting good recordings, good data to prove yourself one way or the other is helpful and continuing to evaluate. So usually, as I said, focal seizures that don't show up well on the EEG. People who have focal seizures will often have larger seizures if left untreated. So, you can try to admit them to an epilepsy monitoring unit where we try to provoke seizures and try to provoke a larger seizure to help confirm that diagnosis. Dr Grouse: This kind of gets into what we've already reviewed to some degree, but what is the easiest mistake to make (and hopefully avoid) when using EEG to diagnose epilepsy or make other treatment decisions? Dr Weber: I think the easiest, most common mistake I see is overreliance on the test. There's a lot of subjectivity to the interpretation of this test. There are a lot of studies out there on interrater reliability for epilepsy and intrarater reliability for epilepsy. We continue to try to make the findings more objective and get more quantified. The articles talk about our six criteria for epileptiform discharges and have reference to where that came from and the sorts of specificity that each of those criteria lead to. Just because an EEG report has said something, that does not diagnose or negate a clinical diagnosis of epilepsy. It is common for folks with non-epileptic seizures to have a history of reported epileptic form discharges on their EEG. Again, because there is some subjectivity to the test, some abnormal-looking normal variants will pop up and get interpreted as epileptiform discharges. It's important to review the whole patient, as much of the data as you can, and make the best clinical judgment you can of the overall case. Dr Grouse: What is quantitative EEG and how can it be clinically useful? Dr Weber: Now that most EEG is obtained digitally through the use of computer software, we have been able to employ computers to do a lot of the work for us. There are many different ways of looking at the EEG data, but it's all frequency bands over time. The quantitative EEG goal is really to simplify and condense what you're seeing on your normal EEG page into a more digestible format. Lets you look at a larger amount of data faster, which becomes more and more important as we're doing more of these long-term recordings, particularly in the intensive care unit. Quantitative EEG can help you assess a lot of data at a snapshot and get a general sense of what's going on with the patient over the past several hours. It does require some extra training to become familiar with it, but it's training that can be done at all levels. Again, it can help you see more, faster. Obviously, like everything, it has its own limitations. Sometimes the sensitivity and specificity may be a little off from the raw data review, and you should always go back to the raw data anytime there are questions. But it can be helpful to make things faster. Dr Grouse: Do you think you could give me a hypothetical example of a case where this would be something really nice to have? Dr Weber: The most common example is folks with repetitive seizures in the ICU. If you're just looking at the raw data, you will get a sense of how often the seizures are happening. But if you look at the quantitative data, it sort of compresses that all down to a much smaller snapshot. So you can see much more readily, yes, these are how many seizures were happening. And here's where we gave our intervention; and look, there are fewer seizures after that intervention. So, it can help you assess response to treatment, help you assess just overall volume of seizures in a much more condensed fashion, and you can get through it much faster with the appropriate training. Dr Grouse: Can you tell us about any new developments in EEG that are on the horizon we should be aware of? Dr Weber: Yeah. So, I think my two favorites, which I highlight in the article, are longer-term recordings---so, there's some companies that are working on subcutaneous EEG. So, implanted EEG electrodes that can stay in your body for the short, long term on the order of year or years and constantly send some EEG data. Obviously, it's not a full montage in most of those cases, but some EEG data that can help you assess long-term trends in epilepsy and long-term response to therapies. I think that's going to be really cool. I think it's very exciting and I think it'll change how we do clinical trials in the future. I think we'll be able to rely less on seizure diaries from folks and more on objective seizure data for patients who have these implanted. But with that will come an ever-increasing amount of data to be reviewed, which leads into the other exciting future trend is AI in the use of interpretations. AI is becoming more and more advanced and there are very exciting articles out on how good AI is getting at interpreting our EEGs. I think soon, in the very near future, the AI platforms will be able to dramatically reduce the amount of time it takes the experts to re…

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    Classification and Diagnosis of Epilepsy With Dr. Roohi Katyal Feb 05, 2025
    Show notes

    Epilepsy classification systems have evolved over the years, with improved categorization of seizure types and adoption of more widely accepted terminologies. A systematic approach to the classification of seizures and epilepsy is essential for the selection of appropriate diagnostic tests and treatment strategies. In this episode, Aaron Berkowitz, MD, FAAN, speaks with Roohi Katyal, MD, author of the article "Classification and Diagnosis of Epilepsy," in the Continuum February 2025 Epilepsy issue. Dr. Berkowitz is a Continuum® Audio interviewer and a clinical professor of neurology at the University of California, San Francisco. Dr. Katyal is an assistant professor of neurology and codirector of adult epilepsy at Louisiana State University Health Shreveport in Shreveport, Louisiana. Additional Resources Read the article: Classification and Diagnosis of Epilepsy Subscribe to Continuum: shop.lww.com/Continuum Earn CME (available only to AAN members): continpub.com/AudioCME Continuum® Aloud (verbatim audio-book style recordings of articles available only to Continuum® subscribers): continpub.com/Aloud More about the American Academy of Neurology: aan.com Social Media facebook.com/continuumcme @ContinuumAAN Host: @AaronLBerkowitz Guest: @RoohiKatyal Full episode transcript available here Dr Jones: This is Dr Lyell Jones, Editor-in-Chief of Continuum, the premier topic-based neurology clinical review and CME journal from the American Academy of Neurology. Thank you for joining us on Continuum Audio, which features conversations with Continuum's guest editors and authors who are the leading experts in their fields. Subscribers to the Continuum Journal can read the full article or listen to verbatim recordings of the article and have access to exclusive interviews not featured on the podcast. Please visit the link in the episode notes for more information on the article, subscribing to the journal, and how to get CME. Dr Berkowitz: This is Dr Aaron Berkowitz, and today I'm interviewing Dr Roohi Katyal about her article on classification and diagnosis of epilepsy, which appears in the February 2025 Continuum issue on epilepsy. Welcome to the podcast, Dr Katyal, and could you please introduce yourself to our audience? Dr Katyal: Thank you for having me. I'm very excited to be here. I'm Dr Roohi Katyal. I currently work as Assistant Professor of Neurology at LSU Health Shreveport. Here I also direct our adult epilepsy division at LSU Health along with my colleague, Dr Hotait. Dr Berkowitz: Fantastic. Well, happy to have you here. Your article is comprehensive, it's practical, and it focused on explaining the most recent International League Against Epilepsy (ILAE) classification of epilepsy and importantly, how to apply it to provide patients with a precise diagnosis of epilepsy and the particular subtype of epilepsy to guide the patient's treatment. There are so many helpful tables and figures that demonstrate all of the concepts and how to apply them at the bedside. So, I encourage our listeners to have a look at your article, even consider maybe screenshotting some of these helpful tables onto their phone or printing them out for handy reference at the bedside and when teaching residents. Your article begins with the current definition of epilepsy. So, I want to ask you about that definition and make sure we're on the same page and understand what it is and what it means, and then talk through a sort of hypothetical patient scenario with you to see how we might apply these in clinical practice. You talked about, in your article, how the new definition of epilepsy from the ILAE allows for the diagnosis of epilepsy in three different scenarios. So, could you tell us what these scenarios are? Dr Katyal: So, epilepsy in general is a chronic condition where there is a recurrent predisposition to having seizures. As you mentioned, epilepsy can be diagnosed in one of three situations. One situation would be where an individual has had two or more unprovoked seizures separated by more than 24 hours. The second situation would be where somebody has had one unprovoked seizure and their risk of having recurrent seizures is high. And the third situation would be where somebody had---where the clinical features could be diagnosis of an epilepsy syndrome. An example of that would be a young child presenting with absence seizures and their EEG showing 3 Hz characteristic generalized spike in with discharges. So that child could be diagnosed with childhood absence epilepsy. Dr Berkowitz: Perfect. Okay, so we have these three scenarios, and in two of those scenarios, we heard the word unprovoked. Just to make sure everyone's on the same page, let's unpack this word "unprovoked" a little bit. What does it mean for a seizure to be unprovoked versus provoked? Dr Katyal: So unprovoked would be where we don't have any underlying provoking features. So underlying provoking features are usually reversible causes of epilepsy. These would be underlying electrolyte abnormality, such as hyperglycemia being a common one which can be reversed. And these individuals usually do not need long-term treatment with anti-seizure medications. Dr Berkowitz: Fantastic. Tell me if I have this right, but when I'm teaching residents, I… did it provoked and unprovoked---there's a little confusing, right? Because we use those terms differently in common language than in this context. But a provoked seizure, the provoking factor has to be two things: acute and reversible. Because some people might say, well, the patient has a brain tumor. Didn't the brain tumor provoke the seizure? The brain tumor isn't acute and the brain tumor isn't reversible, so it would be an unprovoked seizure. I always found that confusing when I was learning it, so I try to remind learners I work with that provoked means acute and reversible, and unprovoked means it's not acute and not reversible. Do I have that right? Am I teaching that correctly? Dr Katyal: That's correct. Dr Berkowitz: Great. And then the other important point here. So, I think we were all familiar prior to this new guideline in 2017 that two unprovoked seizures more than twenty-four hours apart, that's epilepsy. That's pretty straightforward. But now, just like we can diagnose MS at the time of the first clinical attack with the right criteria predicting that patient is likely to have relapse, we can say the patient's had a single seizure and already at that time we think they have epilepsy if we think there's a high risk of recurrence, greater than or equal to sixty percent in this guideline, or an epilepsy syndrome. You told us what an epilepsy syndrome is; many of these are pediatric syndromes that we've studied for our boards. What hertz, spike, and wave goes with each one or what types of seizures. But what about this new idea that a person can have epilepsy after a single unprovoked seizure if the recurrence rate is greater than sixty percent? How would we know that the recurrence rate is going to be greater than sixty percent? Dr Katyal: Absolutely. So, the recurrence rate over sixty percent is projected to be over a ten year period. So, more than sixty percent frequency rate in the next ten years. And in general, we usually assess that with a comprehensive analysis and test. So, one part of the comprehensive analysis would be, a very important part would be a careful history taking from the patient. So, a careful history should usually include all the features leading up to the episodes of all the prodromal symptoms and warning signs. And ideally you also want to get an account from a witness who saw the episode as to what the episode itself looked like. And in terms of risk assessment and comprehensive analysis, this should be further supplemented with tests such as EEG, which is really a supportive test, as well as neuroimaging. If you have an individual with a prior history of, let's say, left hemispheric ischemic stroke and now they're presenting with new onset focal aware seizures with right arm clonic activity, this would be a good example to state that their risk of having future seizures is going to be high. Dr Berkowitz: Perfect. Yeah. So, if someone has a single seizure and has a lesion, as you said, most common in high-income countries would be a prior stroke or prior cerebrovascular event, prior head trauma, then we can presume that the risk is going to be high enough that we could call that epilepsy after the first unprovoked seizure. What if it's the first unprovoked seizure and the imaging is unremarkable? There's no explanatory lesion. How would we get to a diagnosis of epilepsy? How would we get to a risk of greater than sixty percent in a nonlesional unprovoked seizure? I should say, no lesion we can see on MRI. Dr Katyal: You know, in those situations an EEG can be very helpful. An EEG may not always show abnormalities, but when it does show abnormalities, it can help us distinguish between focal and generalized epilepsy types, it can help us make the diagnosis of epilepsy in certain cases, and it can also help us diagnose epilepsy syndromes in certain cases. Dr Berkowitz: Perfect. The teaching I remember from a resident that I'm passing on to my residents, so please let me know if it's correct, is that a routine EEG, a 20-minute EEG after a single unprovoked seizure, this sensitivity is not great, is that right? Around fifty percent is what I was told with a single EEG, is that right? Dr Katyal: Yeah, the sensitivity is not that great. Again, you know, it may not show abnormality in all the situations. It's truly just helpful when we do see abnormalities. And that's what I always tell my patients as well when I see them in clinic. It may be abnormal or it may be normal. But if it does show up normal, that does not rule out the diagnosis of epilepsy. Really have to put all the pieces together and come to that finally diagnosis. Dr Berkowitz: Perfect. Well, in that spirit of putting all the pieces together, let's walk through together a hypothetical case scenario of a 19-year-old patient who presents after a first event that is considered a possible seizure. First, how do you approach the history and exam in this scenario to try to determine if you think this was indeed an epileptic seizure? Dr Katyal: So, if I'm seeing them in the clinic or in the outpatient setting and they're hopefully presenting with somebody who's already seen the seizure itself, my first question usually is if they had any warning signs or any triggers leading up to the episode. A lot of times, you know, patients may not remember what happened during the episode, but they may remember if they felt anything different just before or the day prior, something different may have happened around that time. Yeah, so they may report that. Then a very important aspect of that would be talking to somebody who has seen the episode, a witness of the episode; and ideally somebody who has seen the onset of the episode as well, because that can give us very important clues as to how the event or the episode started and how it progressed. And then another very important question would be, for the individual who has experienced it, is how they felt after the episode ended. So, you can get some clues as to if they had a clear postictal state. Other important questions would be if they had any tongue biting or if they lost control of their bladder or all those during the episode. This, all those pieces can guide us as to if the seizure was epileptic, or the episode was epileptic or not. Dr Berkowitz: Fantastic. That's very helpful guidance. All right. So, let's say that based on the history, you're relatively convinced that this patient had a generalized tonic clonic seizure and after recovering from the event, you do a detailed neurologic exam. That's completely normal. What's your approach at this point to determining if you think the seizure was provoked or unprovoked, since that's, as you said, a key component of defining whether this patient simply had a seizure, or had a seizure and has epilepsy? Dr Katyal: The important findings would be from the laboratory test that may have been done at the time when the patient first presented with the seizure. So, we want to rule out features like hypoglycemia or other electrolyte abnormalities such as changes in sodium levels or big, big fluctuations there. We also want to rule out any other metabolic causes or other reasons such as alcohol withdrawal, which can be a provoking factor. Because these would be very important to rule out is if we find a provoking reason, then this individual may not need to be on long term anti-seizure medication. So very important to rule that out first. Dr Berkowitz: Great. So, let's say you get all of your labs and history and toxicology screen and no provoking factors there. We would obtain neuroimaging to see if there's either an acute provoking factor or some type of lesion as we discussed earlier. Let's say in this theoretical case, the labs are normal, the neuroimaging normal. There is no apparent provoking factor, there's no lesion. So, this patient has simply had a single unprovoked seizure. How do we go about now deciding if this patient has epilepsy? How do we try to get ourselves to either an above sixty percent risk and tell this patient they have epilepsy and probably need to be on a medicine, or they have a less than sixty percent risk and that becomes a little more tricky? And we'll talk about that more as well. Dr Katyal: For in a young patient, especially in a young patient as a nineteen year old as you present, one very important aspect if I get this history would be to ask them about absolutely prior history of similar episodes, which a lot of times they may not have had similar episodes. But then with this age group, you also want to ask about episodes of brief lapses in awareness or episodes of sudden jerking or myoclonic jerking episodes. Because if you have brief lapses of awareness, that could signify an absence seizure in this particular age group. And brief, sudden episodes of myoclonic jerking could be brief myoclonic seizures in this age group. And if we put together, just based on the clinical history, you could diagnose this patient with a very specific epileptic syndrome, which could be juvenile myoclonic epilepsy in the best case. Let's say if you ask about episodes of staring or relapses of awareness, that's not the case, and there's no history of myoclonic jerking episodes or myoclonic seizures, then the next step would be proceeding to more of our supplemental tests, which would be an EEG and neuroimaging. In all cases of new-onset seizure especially should have comprehensive assessment with EEG and neuroimaging to begin with, and we can supplement that with additional tests wherever we need, such as genetic testing and some other more advanced testing. Dr Berkowitz: That's very helpful. OK, so let's say this particular patient, you talk to them, you talk to their family, no prior history of any types of events like this. No concerns for spells that could---unlike absence, no concern for movements that could sound like myoclonus. So, as you said, we would be looking for those and we could get to part one of the definition. There is more than one spell, even though we're being consulted for one particular event. But let's say this was the only event, we think it's unprovoked, the neuroimaging is normal. So, you said we proceed to an EEG and as you mentioned earlier, if the EEG is abnormal, that's going to tell us if the risk is probably this more than sixty percent and the patient should probably be on a medicine. But commo…

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    February 2025 Epilepsy Issue With Dr. Jennifer Hopp Jan 29, 2025
    Show notes

    In this episode, Lyell K. Jones Jr, MD, FAAN, speaks with Jennifer L. Hopp, MD, FAAN, FAES, FACNS, who served as the guest editor of the Continuum® February 2025 Epilepsy issue. They provide a preview of the issue, which publishes on February 3, 2025. Dr. Jones is the editor-in-chief of Continuum: Lifelong Learning in Neurology® and is a professor of neurology at Mayo Clinic in Rochester, Minnesota. Dr. Hopp is a professor in the department of neurology at the University of Maryland School of Medicine in Baltimore, Maryland. Additional Resources Continuum website: ContinuumJournal.com Subscribe to Continuum: shop.lww.com/Continuum More about the American Academy of Neurology: aan.com Social Media facebook.com/continuumcme @ContinuumAAN Host: @LyellJ Guest: @JenHopp71 Full episode transcript available here Dr Jones: This is Dr Lyell Jones, Editor-in-Chief of Continuum, the premier topic-based neurology, clinical review and CME journal from the American Academy of Neurology. Thank you for joining us on Continuum Audio, a companion podcast to the journal. Continuum Audio features conversations with the guest editors and authors of Continuum who are the leading experts in their fields. Subscribers to the Continuum Journal have access to exclusive audio content not featured on the podcast. If you're not already a subscriber, we encourage you to become one. For more information, please visit the link in the show notes Dr Jones: This is Dr Lyell Jones, Editor-in-Chief of Continuum, Lifelong Learning in Neurology. Today I'm interviewing Dr Jennifer Hopp, who recently served as Continuum's guest editor for our latest issue on epilepsy. Dr Hopp is a professor and executive vice chair in the Department of Neurology at the University of Maryland School of Medicine, where she's also director of the Epilepsy Center. Dr Hopp, welcome. Thank you for joining us today. Why don't you introduce yourself to our listeners? Dr Hopp: Hi, Dr Jones. Thank you so much for having me on this podcast. I really had so much fun working with you and other authors of this issue and serving as editor. I feel like it was yesterday that I was author of an article in the past. And so, it's really a pleasure to take on this new role and create the content for the issue of Continuum for Epilepsy and really particularly to work with the stellar group of experts and authors that we were able to have us join this year. Dr Jones: I want to thank you for, really, it's a remarkable issue. And we usually don't get into this a lot with our guest editors, but our last issue on epilepsy came out in 2022. Fantastic issue, guest edited by Dr Natalie Jette. When you were designing the table of contents and article topics for this issue, you had some great ideas. Walk us through your thought process on what was most important to convey in this issue. Dr Hopp: Sure, I'm happy to do so. I think one of the things about Continuum that is so accessible to everybody is that it really is, to me, preeminent format of updating and educating, whether it's epileptologist, neurologist, trainees in every area of epilepsy, which is obviously an enormous task to really pull together all of these data to make updates and then to make it accessible to all of these different levels of learners as well as people like myself. I really read and always look forward to all the Continuum issues outside of my field. I use it to update my knowledge base, get ready for boards. I also read it as an educator because I want to know what my trainees are reading during their rotations and I want to be able to share materials with them. So, I really tried to go back and look at other issues and think about how we could make it fresh. So, I think one of the first challenges is just making sure that we're updating the content of each article based on the literature and the data we have. That really becomes the task of the authors. And so first of all, selecting the authors was both fun but also really important to me. But the second aspect of it to me was really the question of, how could we make this fresh this year? I think Continuum is always fresh and that it has new data, but I wanted to really think outside the box and I appreciate being able to take a few risks. One of them was really headed by Dave Clarke, who provides this incredibly thoughtful and comprehensive review of access to care and epilepsy. I think for anyone who wants a primer on the issues and language used in discussions of diversity or social determinants of health---you first of all do not have to be in the field of epilepsy to read this. So, you should check that out. But I also thought it was really critical to shed more light on these issues. So, we tried to be mindful of this in threading that through as best as we could each article, but also have a stand-alone section that he headed. And so, he addresses issues of how to think about access to care for people with epilepsy, but actually, interestingly, also thinking about the investigators, providers, and researchers, and how we think about diversity in those viewpoints as well. I think we can always do better. Dave concludes with a wonderful focus on hope in this area with next steps for our community. So, I think that that was certainly one area that I wanted to take a risk and I think it was quite successful. Dr Jones: Totally agree. I very much enjoyed that article. We have an article on implementation of guidelines and quality measures by Dr Christina Baca. I thought that was a great choice from your perspective, not only because Dr Baca is an expert on this, but it felt very practical, right? Dr Hopp: Exactly. Exactly. And that was the other area that I thought really is always covered so well by the Academy of Neurology. There's so much work in updating the guidelines, whether it's the guideline that just was updated on people with epilepsy of childbearing potential or others outside of the field of epilepsy. And I thought that we could use Continuum to help educate all of the readers on how to take those guidelines and measures and then really bring them into practice. I think there's a whole field of implementation science that I think shines a light on the gap between the guidelines and the measures and then really what we do with them in practice. And that's actually what's most important for our patients and for the providers. And so Christine does just an amazing job as an expert, not only walking us through the guidelines that are relevant for epilepsy, but then helping us and providing, essentially, a toolkit to take those measures and guidelines and use them in a very feasible, accessible way in day-to-day practice. And I would suggest that it's relevant for anyone from a student level resident to an epileptologist who's been in practice, like me, for many years. And so I hope that's relatable and useful to the reader. Dr Jones: I think it will be. And let's get right into it. So, I always enjoy talking to the guest editor. You're already an expert and now you've just read a bunch of articles and edited a bunch of articles from people who are really the premier experts in their area of the field, right? They're niche within epilepsy. So, as you've read these articles across the issue, if there were one biggest practice-changing recommendation that you would want to convey to our listeners, what would that be? Dr Hopp: I think that's a fabulous question because again, each of these articles, I think, is designed and written by the author to stand alone. But ideally, they need to all be incorporated in practice. And I think what each author was able to really successfully do is not only review the data, but really take us to the next level with practice of epilepsy. For example, I think as we embark on the next couple of decades, clearly increased technology, AI, personalized medicine are all buzzwords and taking the lead. In reality, with advances, we still have to make sure our care is personalized. And we have to remember seizures are really the symptom, but epilepsy is the disease. What I think our authors do well is make sure that our care is personalized to the patients. You could take that from the first article that Roohi Katyall writes about how to approach the patient with epilepsy, which is still, I think, the seminal way to start to think about these patients. But we need to ask issues pertaining to people with epilepsy of childbearing potential; screen for mood, other comorbidities. Mark Keezer does a great job talking about these. And then as we discussed, Christine Baca, PCU, talks about how to then incorporate those practical considerations into practice. Each author also, I think, emphasizes the need to utilize technology and testing and evaluation to make sure that our care is personalized for our patient. For example, we have a focus on certain special populations. Some patients who we see from the diagnosis of epilepsy end up not having seizures. They may have nonepileptic events. And so, Adriana Bermeo-Ovalle and her co-author talk about how to address those patients. Well, Meriem Bensalem-Owen talks about gender based issues in epilepsy as well. And, and that particular article also was updated and refreshed to really address gender and sex-based issues beyond treating the woman with epilepsy. So, I think in summary, each of them really helps us make sure that we're personalizing the care for patients by emphasizing a very thorough and individualized approach to each of our patients that we see with seizures. Dr Jones: Now that you put it that way, that really did come across as a consistent theme essentially in every article, right? All the way from the evaluation of the patient suspected of having epilepsy to the treatment options to the context of care. Personalization is really kind of a continuous thread throughout the issue. So, I think that's a great one. Dr Hopp: I think it's still aspirational in some sense, but hopefully practical in another. For example, we certainly are going to make a medication selection when we see each individual patient based on their comorbidities, perhaps genetic considerations, and how they may respond to medications or have risks of rash. But there are certainly still guidelines that we need to approach and think about when thinking about populations of people who have epilepsy as a whole. I think that what's interesting in the field of epilepsy is that we still don't have as much consensus as I think we could on the best way to treat, for example, a drug-resistant patient with epilepsy. One of, I think, the biggest areas of opportunity in terms of personalized medicine as we move forward is that there's such variability on patient care based on the epilepsy center, the tools that we have on how to treat these patients. And I think an aspiration is for us to, in the future, be able to see a patient who has seizures or a person who has seizures, maybe put an FDA-approved device, as Dan Friedman talks about in his article, to help detect the seizures. Use AI with EEG to detect abnormalities in their studies. And then use imaging processing and genetic or metabolic markers to really end up stratifying the risk and creating a treatment plan much akin to what's done in the world of cancer care. I think what's so exciting in epilepsy is that we have made so many advances in terms of our treatments, but I think there's so much to do to really stratify and personalize care for our patients that we really could take a lot of lessons from the world of cancer and in other fields of medicine to really be able to apply to our area of specialization. Dr Jones: And I guess that's one of the common tensions in neurology---and medicine, really---is the pull between standardizing and protocolizing. And usually we do better when we're standardized in our care versus that personalization, doing the right thing for that individual person. And I guess expertise lies in the middle, which is why we want people to read these articles, right? Dr Hopp: Exactly. I think you've hit the nail on the head, and I think the takeaway here is really that we need to do both. There's no question that we can't reinvent the wheel for every person who we see in the office who has epilepsy and not apply the knowledge that we've gained based on all of the research and work that's been done in the field of epilepsy. So, for example, we know that if someone is almost 25 years old, Quantum Brody published that shows that if someone does not respond to a few drugs, anti-seizure medicines, the likelihood that they're not going to respond, it is quite high. So, we need to apply data that we have to patients as a whole. But then, I think, what has changed and evolved over the past twenty-five years is our ability to potentially personalize some of that decision making. And that's where I think the field of epilepsy is right now, and hopefully where it's going to go in the next decade or so. Dr Jones: So, what do you think the next big thing in epilepsy diagnosis or management will be? Dr Hopp: I think that technology is really going to play a role. Technology, I think, will take many forms. We hear a little bit about some of the new advances in technology in several articles in this issue. One, for example, is in the ability to manage even emergent seizures or clusters of seizures in patients. The ability to provide a nasal spray that works very quickly is so different than the tools that we had to treat seizures even 10 years ago. I think that technology will likely thread through many different areas of epilepsy care, whether it's in the treatment and availability of different medications or in the ascertainment of epilepsy itself. I think that one of the very exciting areas in technology is in pharmacogenomics and genetics, which hopefully will allow us to close the gap in selecting one of the better medications or best medication for a patient earlier in their diagnosis and in their treatment plan. If we are able to get patients treated more quickly, whether it's with medication or in selection of the best surgical treatment, hopefully we will close the gap in reducing the possibility of drug resistant epilepsy, but also have impact in quality of life and getting patients and people with epilepsy and doing that, doing the things that they want to do such as driving, going to work, getting engaged in the things that make them happy. And so, I think our ability to use technology, whether it's in using a watch to make a diagnosis of seizures or pharmacogenomics to make a good medication selection, hopefully this will allow us to speed up our algorithm in making a diagnosis and getting an effective treatment plan for patients earlier. And ultimately that's our goal. Our goal for patients is ideally to have no seizures and no side effects with a good quality of life. Dr Jones: Yeah, the technology has really been breathtaking. You know, one of the commonalities between your practice and my practice is electrophysiology. I do neuromuscular electrophysiology, which is much simpler than what you do with cerebral electrophysiology. And whenever I sit down next to a colleague who is about to review forty-eight hours' worth of EEG recordings, I always think what a massive amount of data and I always feel sympathy for them. What, about AI? What about automated processing tools? Is that something that our listeners should look forward to in the future? Dr Hopp: I think so. And I hope it's a blend. I hope that---and I always actually talk about this with trainees because I love EEG so much and I love translating the principles of physics and neurophysiology when we're sitting in front o…

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    Care Partner Burden and Support Services in Dementia With Dr. Angelina J. Polsinelli Jan 22, 2025
    Show notes

    Informal care partners are essential to the care of people living with dementia, but they often experience significant burden and receive minimal training, support, and resources. Multicomponent interventions can mitigate burden and other negative consequences of caregiving. In this episode, Gordon Smith, MD, FAAN speaks with Angelina J. Polsinelli, PhD, ABPP-CN, author of the article "Care Partner Burden and Support Services in Dementia" in the Continuum® December 2024 Dementia issue. Dr. Smith is a Continuum® Audio interviewer and professor and chair of neurology at Kenneth and Dianne Wright Distinguished Chair in Clinical and Translational Research at Virginia Commonwealth University in Richmond, Virginia. Dr. Polsinelli is an assistant professor of clinical neurology at the Indiana University School of Medicine in Indianapolis, Indiana. Additional Resources Read the article: Care Partner Burden and Support Services in Dementia Subscribe to Continuum: shop.lww.com/Continuum Earn CME (available only to AAN members): continpub.com/AudioCME Continuum® Aloud (verbatim audio-book style recordings of articles available only to Continuum® subscribers): continpub.com/Aloud More about the American Academy of Neurology: aan.com Social Media facebook.com/continuumcme @ContinuumAAN Host: @gordonsmithMD Full interview transcript available here Dr Jones: This is Dr Lyell Jones, Editor-in-Chief of Continuum, the premier topic-based neurology clinical review and CME journal from the American Academy of Neurology. Thank you for joining us on Continuum Audio, which features conversations with Continuum's guest editors and authors who are the leading experts in their fields. Subscribers to the Continuum journal can read the full article or listen to verbatim recordings of the article and have access to exclusive interviews not featured on the podcast. Please visit the link in the episode notes for more information on the article, subscribing to the journal, and how to get CME. Dr Smith: This is Dr Gordon Smith. Today, I've got the great pleasure of interviewing Dr Angelina Polsinelli about her article on care partner burden and support services in dementia. This article appears in the December 2024 Continuum issue, which is on dementia. Ange, welcome to the podcast. And maybe you can begin by just introducing yourself to our audience? Dr Polsinelli: Yeah. Well, thank you for having me. I'm very excited to be here. I'm Ange Polsinelli. I'm a neuropsychologist at Indiana University School of Medicine, where I work in the Department of Neurology. I also work with the Longitudinal Early Onset Alzheimer's Disease study that's led by Liana Apostolova. And I also do some work with the Outreach, Recruitment and Engagement Core of the Indiana Alzheimer's Disease Research Center. This topic that we're going to talk about today is extremely near and dear to my heart. Dr Smith: Well, thanks for joining me. And of course, IU is a powerhouse for Alzheimer's and basketball, in that order. So, we're really excited to have you. I'd like to get right into it. I'll emphasize, we were chatting a little bit about this, Ange, before we started recording, that your topic today is so important for all of us. And I think, you know, this is a podcast that not only neurologists listen to, but students and, and I think increasingly members of the lay public. And this conversation is going to be very important for neurologists and our neurology learners. But I lost my grandmother to Alzheimer's disease. I lost my uncle just in the last week. So, this touches all of us. So, I'm really excited. And then with that in mind, I wanted to begin with a statistic that- you can correct me if I misunderstood it, but it really blew my mind. And that is across the world, as I understand it, care partners provide one hundred and thirty three billion hours of care for people living with dementia yearly, which is pretty staggering. But what's really amazing is that by 2030 that number is expected to go to one point four trillion hours, which I couldn't grab my mind around it. So, I figured I'd try and determine how many years of person work is that and if my math is right, that's almost a hundred and sixty million person years of worth caring for people with dementia yearly across the world. One, are those numbers right? Did I get it right? And then, assuming so, can you put a human face or experience to these numbers? Dr Polsinelli: Yeah, unfortunately those numbers are correct. And with our increasing aging population across the world, that's why you're getting that, you know, exponential increase in care per hours, compounded by the fact that the majority of the caregiving that happens is not done by doctors, physicians, but it's done by these informal care partners, these family members, these friends, these siblings, children, who are providing these really important services and unfortunately not being trained to do this, doing it largely on their own in a lot of respect. But again, these are people who are loved ones of the person living with dementia. There are a variety of kinships, as I mentioned, siblings, children, spouses, friends; and all sorts of age ranges as well. A large majority of them being spouses, and then the second largest majority being children. So, kind of a sandwich generation of people who are caring for parents with Alzheimer's or dementia and then caring for children as well. Dr Smith: Yeah, I was actually struck by the statistic that a quarter of caregivers or so called sandwich caregivers; in other words, they're taking care of a parent and a child. But listen to what you said. But just to call it out, two-thirds of care partners are women, which is a striking statistic. Dr Polsinelli: Absolutely. Women are not only more likely to have dementia, but they are also more likely to be the care partners of somebody who has dementia. And so, the research shows, too, that if you're a care partner, you're at higher risk of developing dementia yourself. So, there's a lot of risk for women when it comes to dementia, development of dementia, but also that the burden and the majority of care needs that are that are supported by women as well. Dr Smith: Right. And there's a lot to unpack in that observation, and maybe we can come back to that. But I wonder if you might talk to us a little bit about the risk of dementia in women caregivers. That's really striking. Is there any thought regarding mechanism for that? Why is that the case? Is it a shared risk factor? Is it cause and effect? What's the story? Dr Polsinelli: So, there are - this is kind of a dissociable or different - kind of two aspects to this, this question. There's the fact that women are at higher risk for developing dementia in general. I think the researchers feel sort of out about why exactly that is. It's not just that women are at higher risk or more likely to develop dementia because they're living longer than men, but there's probably some hormonal aspects of their higher risk factor for dementia. But then there's the other aspect of it too, is that as caregivers, caregivers are at higher risk of developing dementia. And because caregivers tend to be women, that increases or compounds the risk for women as well. We know with caregiving, particularly with someone who's living with dementia, there's more risk of developing things like depression, high stress, health problems, psychological distress, and all of these things increase somebody 's risk for developing dementia as well. Dr Smith: So, I wonder if you might talk a little more, Ange, about what you mean by burden? I think we have in our mind what that is. But in reading your article, there's a lot of- a lot more to it than may meet the eye. Dr Polsinelli: Yeah, it is a more complicated, I guess, topic or terminology that's gone through several iterations over the course of doing research into burden. But when we think about burden, it's really a kind of a combination of both objective experiences and subjective experiences. And these objective, subjective experiences fall into the categories of physical burden, emotional burden, psychological burden. So, there's a lot of different areas of life in which someone can experience burden. But really, it's a combination of factors of both the objective experience, lived experience, and the person 's perception of that experience or what they're dealing with. I should also mention that it appears to be more of that subjective experience or that perception that people have of their objective experience of stressors or burden. That really does determine the person's response to that, if whether they actually perceive their lived experience as being burdensome. Dr Smith: One of the things I found really interesting was the societal and cultural context surrounding this, that there are different cultural expectations and societal dynamics, both in the nature of the burden care partners may feel and how they're viewed. I wonder if you could talk about that? I think it's something that it would seem all of us need to be attuned to as we're working with our patients and their families. Dr Polsinelli: Yeah, this is a topic we could talk for a very long time on. I will try and- I will try not to kind of provide too much of a, or too lengthy of a response. But what we know now is basically that our models of stress and burden that we have typically used or historically used do not incorporate a lot of factors of cultural identity of social and structural determinants of health factors. And so, what we understand now is that stress and the way that people perceive burden is influenced by so many other factors than just kind of an experience and a perception. Because that perception is influenced by so many factors, including, as you mentioned, cultural factors that include how society's familial expectations for us, cultural expectations for us, as well as what our resources are that are determined by, again, structural and social determinants of health, what our community resources are. They're just a lot of different factors that go into how somebody perceives their ability to cope with, again, this kind of life-altering diagnosis that their loved one has received and them being the person who is caring for them through that. Dr Smith: Your article actually goes through in some detail the types of burdens and what drives the burden. And that changes over time. And so I wonder if maybe you can talk a little bit about what the specific natures of the burden are from the caregiver perspective. I mean, what sort of tasks there are, you know, from the many of us who take care of patients, we still don't know unless we've been in the room or in the home watching this happen. So maybe you can describe that for those of our listeners who maybe haven't lived through this? Dr Polsinelli: Yeah, absolutely. I will say upfront that the caregiving experience is going to be different for every single person. And again, kind of dependent on some of those factors that I mentioned before. So, it's going to look different for most people. It's also going to look different through the dementia journeys. The experiences and the requirements earlier on in dementia are going to be a vastly different than what occurs later on when dementia is in the more late stage, moderate or severe stages of the disease. Those care responsibilities absolutely change over the spectrum of that time as well. We know that early on the stage of disease, primary care partner might be spending forty plus hours a day. So, a full-time- or not a day. I'm sorry, a week. So, a full time job carrying it. But that number increases up to a hundred and fifty or so hours per week once the person is more advanced in their disease. So, I say that because the number of hours, I think, make all, like- putting that into perspective of somebody having a full time, multiple full time jobs, basically providing care, I think is really important. But the responsibilities of the care partner are going to range from everything from just helping the person early on in terms of managing finances or managing them, making sure they're reminding them to take their medications, scheduling their medical appointments for them, maybe taking over all of the driving to get them to their appointments or to get them to family outings and things like that. They're going to be the ones that's going to be the most responsible for reminding people to do something: to eat, to maybe stay on track for a recipe or something that they are making. So, kind of being the eyes and ears for this person right away, basically right at the beginning, even early stages. And then that progresses over time to the person who is caregiving, who is doing potentially everything for this person. So that means helping them use the restroom when they need to, helping them shower. So, there's a physical component to the caregiving as well as that- sort of what we call instrumental support in terms of organizing medical appointments and things like that. They're just basically doing it all for that person. Dr Smith: So, what about a busy clinician who has half an hour to see a dementia patient follow up? Kind of hard to- in these days, you know, we've got, you know, these new therapies to think about as well. What advice do you have to neurologists and other professionals caring for patients? Dr Polsinelli: Yeah. And I think neurologists, I mean, we all have limited time. And I know neurology in particular is like primary care, has even more constrained time. I think one of the biggest things that neurologists can do is really check in with the care partner. So, take a moment to check in with the care partner who's there with the person with dementia to see how are they doing. You're looking for signs of burden or stress, so things like physical complaints like headaches or stomach ache, mentioning feeling burnt out or overwhelmed, maybe feeling depressed or something like that. There's also some short kind of questionnaires that you could give care partners prior to an appointment that they could fill out. You could kind of get a sense of where is this person at this point and then help connect them potentially to some resources that might be available. And I would refer people to that article that has a list of resources in there that you could just basically print out and give to somebody. Dr Smith: Yeah, I was going to make the same point, Ange. Your article is a treasure trove of information. And you know, I'm certainly, I keep all of these on file, as you might imagine, but I'm keeping it in hand for future use. One of the things you talk about that really hit home for me among many is the idea of self-care, and I think sometimes the best care partners are susceptible to burnout because they they're so dedicated. You made the airplane oxygen mask metaphor, which I love. So maybe you can talk about what airplane oxygen masks have to do with dementia care and what advice you have for us and helping our patient's care partners take care of themselves? Dr Polsinelli: Yeah, absolutely. Self-care is the number one thing I tell care partners to do. It's also one of the hardest things for care partners to do. Like you mentioned, there is a deep, generally speaking, a deep love and caring for the person with who is living with dementia. And the focus becomes on them. And understandably so, the care partners sort of loses focus on themselves and making sure that they're doing okay. So I oftentimes use this oxygen air…

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