Dr. Chapa’s OBGYN Clinical Pearls

Latest Episodes:

HISTORY MADE: New HRT News TODAY (11/10/25) Nov 10, 2025

Show notes

On August 15, 2025, we reviewed the data from an FDA expert panel calling on the FDA to remove the exiting Black Box warning on commercial HRT options for menopausal care. In a historic decision, this happened today. Listen in for details!

1. https://www.cbsnews.com/video/fda-chief-explains-changes-to-black-box-warnings-on-some-hormone-therapies-for-menopause/

2. https://www.hhs.gov/press-room/hhs-advances-womens-health-removes-misleading-fda-warnings-hormone-replacement-therapy.html

A BMI-Based Labor Curve? Nov 09, 2025

Show notes

The ACOG acknowledges that maternal obesity affects labor curves and recommends allowing more time for cervical dilation before diagnosing labor arrest in obese patients. This approach aims to avoid unnecessary interventions, such as premature cesarean delivery, which may occur if standard labor curves are strictly applied to obese women. In this episode, we will review a new study from the AJOG (08 Nov 2025) which describes labor progression and duration according to maternal body mass index, validating the need (possibly) for a BMI -based labor curve. Has there been advocates of a BMI-based labor curve? Listen in for details.

1. Edwards, Sara et al. Characterizing Labor Progression and Duration According to Maternal Body Mass Index. American Journal of Obstetrics & Gynecology, Volume 0, Issue 0

2. Lundborg L, Liu X, Åberg K, et al. Association of Body Mass Index and Maternal Age With First Stage Duration of Labour. Scientific Reports. 2021;11(1):13843. doi:10.1038/s41598-021-93217-5.

3. Kominiarek MA, Zhang J, Vanveldhuisen P, et al. Contemporary Labor Patterns: The Impact of Maternal Body Mass Index. American Journal of Obstetrics and Gynecology. 2011;205(3):244.e1-8. doi:10.1016/j.ajog.2011.06.014.

4. Norman SM, Tuuli MG, Odibo AO, et al. The Effects of Obesity on the First Stage of Labor.

Obstetrics and Gynecology. 2012;120(1):130-5. doi:10.1097/AOG.0b013e318259589c.

Use Antibiotics at 2nd Degree OB Lac Repair? Nov 06, 2025

Show notes

Do you routinely order prophylactic antibiotics at time ofsecond-degree laceration repair? Is there data for that? While the use of prophylacticantibiotics “is reasonable” (per ACOG PB 198) for OASIS lacerations, what doesthe data look like for second degree lacs? Well, the answer is both supportiveAND non-supportive of that practice! In this episode, we will cover a brand newpublication (RCT) from BMJ on this very issue, and also highlight a meta-analysisfrom Plos One (May 2025) that also examined this question. Listen in fordetails!

1. ACOG PB 198

2. Armstrong H, Whitehurst J, Morris RK, HodgettsMorton V, Man R; CHAPTER group. Antibiotic prophylaxis for childbirth-relatedperineal trauma: A systematic review and meta-analysis. PLoS One. 2025 May9;20(5):e0323267. doi: 10.1371/journal.pone.0323267. PMID: 40344566; PMCID:PMC12064200.

3. Risk of infection and wound dehiscence after useof prophylactic antibiotics in episiotomy or second degree tear (REPAIR study):single centre, double blind, placebo controlled randomised trial. BMJ 2025; 391doi: https://doi.org/10.1136/bmj-2025-084312 (Published 29 October 2025): BMJ2025;391:e084312

“New” PCOS Info: 4 Types (AGAIN) Nov 05, 2025

Show notes

On March 29, 2023, we released an episode titled, “The 4 PCOS Phenotypes”. That was in 2023! Now, on 29 October 2025, in the journal Nature Medicine, researchers have published, “Data-driven (FOUR) subtypes of polycystic ovary syndrome and their association with clinical outcomes”. PCOS is not ONE condition: is a constellation of metabolic, endocrine, and ovulatory dysregulation. We covered these 4 phenotypes back then. Is this what the “new data” found? Or what it something else? And how does these affect IVF or pregnancy outcomes? Listen in for details!

1. Gao, X., Zhao, S., Du, Y. et al. Data-driven subtypes of polycystic ovary syndrome and their association with clinical outcomes. Nat Med (2025). https://doi.org/10.1038/s41591-025-03984-1

2. Mar 29, 2023; SPOTIFY: https://creators.spotify.com/pod/profile/dr-hector-chapa/episodes/The-4-PCOS-Phenotypes-e217vv0/a-a9ipgjs

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Folic Acid Update: Women on Epilepsy Meds Do NOT Need More Nov 02, 2025

Show notes

Taking folic acid prior to conception and during pregnancy can help protect the unborn baby from developing abnormalities. Supplements are particularly important for women who have epilepsy, as anti-seizure medication (previously known as anti-convulsants or anti-epileptic drugs) can lead to a deficiency in folic acid. Until 2023, high doses of 4-5 mg per day were recommended. However, this has changed as the data has changed. Did you know the SMFM no longer recommends “high dose” folic acid preconceptionally for patients on seizure medications? This is also highlighted in a recently released epub from Obstetrics and Gynecology (Green Journal) on October 31, 2025. Listen in for details.

1. Mokashi, Mugdha MD, MPH; Cozzi-Glaser, Gabriella MD; Kominiarek, Michelle A. MD, MS. Dietary Supplements in the Perinatal Period. Obstetrics & Gynecology ():10.1097/AOG.0000000000006098, October 31, 2025. | DOI: 10.1097/AOG.0000000000006098

2. Asadi-Pooya AA. High dose folic acid supplementation in women with epilepsy: are we sure it is safe? Seizure. 2015 Apr;27:51-3. doi: 10.1016/j.seizure.2015.02.030. Epub 2015 Mar 7. PMID: 25891927.

3. https://aesnet.org/about/aes-press-room/press-releases/guideline-issued-for-people-with-epilepsy-who-may-become-pregnant

4. Turner C, McIntosh T, Gaffney D, Germaine M, Hogan J, O'Higgins A. A 10-year review of periconceptual folic acid supplementation in women with epilepsy taking antiseizure medications. J Matern Fetal Neonatal Med. 2025 Dec;38(1):2524094. doi: 10.1080/14767058.2025.2524094. Epub 2025 Jun 30. PMID: 40588438.

5. https://www.aan.com/PressRoom/Home/PressRelease/5170#:~:text=The%20guideline%20recommends%20that%20people,and%20possibly%20improve%20neurodevelopmental%20outcomes.

6. https://aesnet.org/about/aes-press-room/press-releases/guideline-issued-for-people-with-epilepsy-who-may-become-pregnant

Whole Blood for PPH! Oct 31, 2025

Show notes

Back on August 9, 2024, we released an episode (link in the show notes) reviewing the renewed interest in transfusing whole blood for PPH rather than component therapy. Now, in O&G open, authors from my Alma Mater (UT Southwestern) have published new data bolstering the use of whole blood for PPH. Listen in for details.

1. Clinical Pearls Episode 2024: https://open.spotify.com/episode/0ZhqoIE9wMcAboDlevq9OW?si=rM32uK8ER8uuWmq4mf5dzA

2. Ambia, Anne M. MD; Burns, R. Nicholas MD; White, Alesha MD; Warncke, Kristen MD; Gorman, April MS; Duryea, Elaine MD; Nelson, David B. MD. Whole Blood in the Management of Postpartum Hemorrhage. O&G Open 2(5):e130, October 2025. | DOI: 10.1097/og9.0000000000000130

3. ACPG PB 183

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New Med For Hot Flashes Oct 29, 2025

Show notes

Elinzanetant, sold under the brand name Lynkuet, receivedapproval from the U.S. Food and Drug Administration (FDA) on October 24, 2025, for the treatment of moderate to severe hot flashes due to menopause. How is this different than Fezolinetant, which was approved in 2023? Listen in for details.

1. Menegaz de Almeida, Artur MS; Oliveira, Paloma MS; Lopes, Lucca MD; Leite, Marianna MS; Morbach, Victória MS; Alves Kelly, Francinny MD; Barros, Ítalo MS; Aquino de Moraes, Francisco Cezar MS; Prevedello, Alexandra MD. Fezolinetant and Elinzanetant Therapy for Menopausal Women Experiencing Vasomotor Symptoms: A Systematic Review and Meta-analysis. Obstetrics & Gynecology 145(3):p 253-261, March 2025. | DOI: 10.1097/AOG.0000000000005812

2. Pinkerton JV, Simon JA, Joffe H, Maki PM, NappiRE, Panay N, Soares CN, Thurston RC, Caetano C, Haberland C, Haseli Mashhadi N, Krahn U, Mellinger U, Parke S, Seitz C, Zuurman L. Elinzanetant for the Treatment of Vasomotor Symptoms Associated With Menopause: OASIS 1 and 2 Randomized Clinical Trials. JAMA. 2024 Aug 22;332(16):1343–54. doi: 10.1001/jama.2024.14618. Epub ahead of print. PMID: 39172446; PMCID: PMC11342219.

3. Cardoso F, Parke S, Brennan DJ, Briggs P,Donders G, Panay N, Haseli-Mashhadi N, Block M, Caetano C, Francuski M, Haberland C, Laapas K, Seitz C, Zuurman L. Elinzanetant for Vasomotor Symptomsfrom Endocrine Therapy for Breast Cancer. N Engl J Med. 2025 Aug 21;393(8):753-763. doi: 10.1056/NEJMoa2415566. Epub 2025 Jun 2. PMID: 40454634.

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Vaginal Vit C For BV? AGAIN! Oct 27, 2025

Show notes

On January 18, 2020, we released an episode called “Vaginal Vit C for BV? Yep, it’s DATA”. That was 5 years ago! Now, in the Green Journal, a new systematic review and meta-analysis is examining this subject….AGAIN. Plus, this is not the only systematic review to investigate this; a similar review was published in Acta Obstétrica e Ginecológica Portuguesa earlier this year (2025) in March. So, did we get it right 5 years ago? Can vaginal Vit C help in eliminating BV? Listen in for details!

1. Khaikin, Yannay MD; Elangainesan, Praniya MD, MSc; Winkler, Eliot MD, MSc; Liu, Kuan PhD, MMath; Selk, Amanda MD, MSc; Yudin, Mark H. MD, MSc. Intravaginal Vitamin C for the Treatment and Prevention of Bacterial Vaginosis: A Systematic Review and Meta-analysis. Obstetrics & Gynecology ():10.1097/AOG.0000000000006092, October 23, 2025. | DOI: 10.1097/AOG.0000000000006092; https://journals.lww.com/greenjournal/pages/articleviewer.aspx?year=9900&issue=00000&article=01389&type=Fulltext

2. Acta Obstétrica e Ginecológica Portuguesa (March 2025): chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://scielo.pt/pdf/aogp/v19n1/1646-5830-aogp-19-01-40.pdf

3. Chapa Clinical pearls 2020: https://podcasts.apple.com/gh/podcast/vaginal-vit-c-for-bv-yep-its-data/id1412385746?i=1000463002444

AFLP vs Preeclampsia with Severe/HELLP Oct 24, 2025

Show notes

Here is a real-world clinical case with a tricky differential: Our team recently readmitted a patient 6 days postpartum/post C-section (which was done for ICP and fetal macrosomia at close to 4500 grams, with A2GDM). She had elevated blood pressures, a frontal headache, some midepigastric pain/RUQ discomfort. Pretty clear picture right: sounds like preeclampsia (PreE) with severe features based on BP elevation and symptoms. So, we started her on mag-sulfate per protocol. Well, her transaminases were in the 400-600s, which was significantly higher than they were at delivery. They then peaked the next day at 900! OK, it still meets criteria for PreE with severe features. But could this also be postpartum Acute fatty Liver of Pregnancy (AFLP)? The clinical picture of these 2 conditions may overlap but there are distinct differences here. AFLP is potentially fatal, so we have to get that diagnosis correct. How can we distinguish AFLP from PreE with severe features or HELLP? Listen in for details.

1. https://www.preeclampsia.org/the-news/health-information/acute-fatty-liver-of-pregnancy-can-be-confused-with-preeclampsia-and-hellp-syndrome

2. Yemde A Jr, Kawathalkar A, Bhalerao A. Acute Fatty Liver of Pregnancy: A Diagnostic Challenge. Cureus. 2023 Mar 26;15(3):e36708. doi: 10.7759/cureus.36708. PMID: 37113350; PMCID: PMC10129069.

3. Maalbi O, Elachhab N, Elkabbaj A, Arfaoui M, Hindi S, Lahbabi S, Oudghiri N, Tachinante R. Management of Acute Fatty Liver of Pregnancy: A Retrospective Study of 12 Cases Compared With Data in the Literature. Cureus. 2025 Jun 11;17(6):e85753. doi: 10.7759/cureus.85753. PMID: 40656400; PMCID: PMC12247011.

4. Siwatch S, De A, Kaur B, et al. Safety and Efficacy of Plasmapheresis in Treatment of Acute Fatty Liver of Pregnancy-a Systematic Review and Meta-Analysis.

Frontiers in Medicine. 2024;11:1433324. doi:10.3389/fmed.2024.1433324.

5. Sarkar M, Brady CW, Fleckenstein J, et al.

6. Reproductive Health and Liver Disease: Practice Guidance by the American Association for the Study of Liver Diseases.Hepatology (Baltimore, Md.). 2021;73(1):318-365. doi:10.1002/hep.31559.

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Does IV Pitocin Increase Abruption Risk? Oct 21, 2025

Show notes

I was recently asked to OPINE on the labor management for a patient who was receiving IV Pitocin for augmentation, who experienced a placental abruption. One physician stated that in "his opinion", Pitocin increased the risk of placental abruption intrapartum, a point which the original treating physician refuted. So, I was asked to be the "referee" on the play. IV Pitocin can result in some maternal-fetal complications but is abruption one of them as a stand-alone complication. Was the first reviewer's opinion correct? Listen in for details.

1. Ben-Aroya Z, Yochai D, Silberstein T, Friger M, Hallak M, Katz M, Mazor M. Oxytocin use in grand-multiparous patients: safety and complications. J Matern Fetal Med. 2001 Oct;10(5):328-31. doi: 10.1080/714904358. PMID: 11730496.

2. Morikawa M, Cho K, Yamada T, et al. Do Uterotonic Drugs Increase Risk of Abruptio Placentae and Eclampsia? Archives of Gynecology and Obstetrics. 2014;289(5):987-91. doi:10.1007/s00404-013-3101-8.

3. ACOG: First and Second Stage Labor Management: ACOG Clinical Practice Guideline No. 8. Obstetrics and Gynecology. 2024;143(1):144-162. doi:10.1097/AOG.0000000000005447.

4. Pitocin. FDA Drug Label. Food and Drug Administration Updated date: 2024-08-12

5. Litorp H, Sunny AK, Kc A. Augmentation of Labor With Oxytocin and Its Association With Delivery Outcomes: A Large-Scale Cohort Study in 12 Public Hospitals in Nepal.Acta Obstetricia Et Gynecologica Scandinavica. 2021;100(4):684-693. doi:10.1111/aogs.13919.

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