Dr. Chapa’s OBGYN Clinical Pearls

Latest Episodes:

“Momnesia”: Your Brain on Pregnancy 🧠😳🧠 Apr 06, 2023

Show notes

Pregnancy causes some well-known and well documented physical changes to the body. While hyperpigmentation, breast enlargement, and increase in vaginal discharge are non-disputed physical changes during pregnancy, other effects on mental capacity (memory and cognition) are more controversial. Does “mommy brain” really exist? Or is it a fulfilled psycho-social expectation? Does pregnancy actually change the brain? In this episode, we’ll present the data and provide some practical tips at the end of the show to help tackle the elusive foe called “momnesia”.

The STI “Testing Window” Apr 04, 2023

Show notes

For a patient who presents after an episode of unprotected sexual intercourse, seeking testing for STIs, it’s important to know when to perform the test. The time between infection and a positive test is called the testing window. This testing window can be different for different pathogens. In this episode, we will review the importance of knowing this testing window, and we will also review the differences between pathogen inoculation, incubation/latency, and their overlap with the testing window.

VWD in Pregnancy Apr 02, 2023

Show notes

Von Willebrand Disease (VWD) is the most common inherited bleeding disorder among American women, and it may present with a history of mucocutaneous bleeding patterns. Ideally, women should be screened/identified with this condition prior to pregnancy- but that is not always the case. How does VWD affect delivery? Is this a cause of immediate PPH? In this episode we will review the clinical manifestations of VWD in pregnancy. We will: 1. review appropriate labs tests for this evaluation, 2. summarize the recommended management peripartum, and 3. discuss if a C-Section is required in the affected patient. LOTS of material is covered in this episode! (References: ACOG's Clinicals Expert Series, March 2023; ACOG CO 785).

Urine STI Screening: New Data Mar 31, 2023

Show notes

For women’s healthcare, there are 3 ways to screen for genital GC, chlamydia, and trichomoniasis: 1. vaginal swab, 2. endocervical swab, or 3. first-catch urine. The CDC states that, “For female screening, specimens obtained with a vaginal swab are the preferred specimen type. Vaginal swab specimens are as sensitive as cervical swab specimens.” Why does it not favor urine screening? Although acceptable at a POPULATION level, there are several caveats to urine screening for STIs at an INDIVIDUAL level. In this episode, we will review the latest published data (March/April) regarding the sensitivity of urine screening for these 3 common STIs. Additionally, we will summarize important instructions/tips for proper self-swab collection, and proper first-catch urine testing.

The 4 PCOS Phenotypes Mar 29, 2023

Show notes

We have come a long way in our understanding of the “Stein and Leventhal Syndrome”. First described in 1935, our understanding of the pathogenesis and future health morbidities of PCOS has grown exponentially. We now know that AMH levels may help in the certain PCOS diagnoses. At the center of this clinical condition lies insulin resistance (IR). One of the manifestations of IR is Acanthosis nigricans (AN). (But AN can also be a marker of a much more deadly condition.) It is important to remember that not all PCOS patients are the same. In this episode, we will review the 4 phenotypes of PCOS and discuss a specific variant of the condition which is called the “lean PCOS variant”.

The Vegan OB Patient Mar 26, 2023

Show notes

The rate of vegetarianism in the United States is dramatically on the rise. While in 2014, a national survey found that only 1% of the US population considered themselves vegetarian, current estimates put that number up to 6%. But not all vegetarians are the same. Is being a strict vegetarian (a.k.a., vegan) associated with any adverse perinatal outcomes? Does being vegan increase your risk of preterm birth? In this episode, we will cover the latest data on how diet can affect perinatal outcomes, and in-utero metabolic programming of the child. 🥑🥗🍎🍇🍊🌾🌾

AC < 10% with Normal EFW: Risks? Mar 26, 2023

Show notes

Traditionally, fetal growth restriction (FGR) was diagnosed when the Hadlock EFW was

Birthing Ball: Toy or Labor Tool? Mar 24, 2023

Show notes

Our current discipline of obstetrics owes a lot to the practice of Midwifery. In a previous episode, we covered “lessons learned from Midwifery” and that is available on our podcast archive. In this episode, we will discuss the data regarding a practice originally propagated by Midwifery: the Birthing Ball. What is the origin of this, and how did it make its way into obstetrical practice? Is there data for it’s use? Does it really help reduce labor pain? In this episode we will summarize the data of a soon-to-be released publication from the AJOG. In this episode, we will find out if the Birthing Ball is a toy… or a labor tool.

For Gerri (CNM)! Quick response regarding a common gyn problem! Mar 22, 2023

Show notes

Gerri, thank you for your voice message today! Welcome to our podcast family. Here’s some helpful notes for you. 😊😊

Back to Amnioinfusion for Mec? New Metaanalysis Data (03/2023) Mar 20, 2023

Show notes

In Oct 2006, the ACOG released Opinion Number 346. This stated that “Based on current literature, routine prophylactic amnioinfusion for the dilution of amnioinfusion for meconium-stained amniotic fluid should be done only in the setting of additional clinical trials”. Back then, some experts criticized the decision to abandon amnioinfusion for meconium based on the limitations of the 2005 study which helped to motivate the ACOG decision. And now, a new systematic review and meta-analysis (published ahead of print March 18, 2023; AJOG) has brought new life into this old debate. Can amnio-infusion, in fact, reduce meconium aspiration syndrome (MAS)? Do current professional guidelines need to be updated? We will explore and dissect this new data in this episode.

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