Dr. Chapa’s OBGYN Clinical Pearls

In 2009, the ACOG released practice bulletin 106 which introduced the 3- tier fetal heart rate classification system. This was followed up in November 2010 with its sister practice bulletin, number 116, “Management of Intrapartum Fetal Heart Rate Tracings”. Yet now, 13 years later, management of the category II tracing remains a conundrum. How long can you watch/observe a category II tracing? Can category II tracings predict fetal acidemia? And what is a step-by-step, evidence-based algorithm for category II management? In this episode, we will cover all of these questions, and summarize a new systematic review/meta-analysis from the AJOG (October 2023) focused on this very condition.

In April 2023, both the ACOG and SMFM released their clinical updates regarding the use of progesterone for preterm birth prevention. While 17-OHP is gone, vaginal progesterone remains an option in the appropriate patient, with some slight differences between the opinions from ACOG and SMFM. A new expert commentary from October 2023 in the AJOG -MFM is calling for a reappraisal of those opinions. Is vaginal progesterone for PTB prevention coming back to treat ALL patients with a history of PTB, not just those with a short cervix? That depends on how you look at the data. And, where does cerclage fit in? Listen in for all this...and more.

Nuchal cords are found in 25-30% of deliveries and can pose challenges during birth. The podcast delves into the fetal somersault delivery maneuver, a safer alternative to the traditional clamp and cut method. This technique preserves vital placental blood transfusion, improving neonatal outcomes. Listeners learn that nuchal cords are generally benign and that effective management can lead to better health for infants. The discussion emphasizes the importance of evidence-based practices in obstetrics.

Hypertensive Disorders in Pregnancy/Preeclampsia is a persistent problem, world-wide. Over the last decade, studies have highlighted the role of vitamin D in modulating several mechanisms associated with hypertensive disorders of pregnancy, including but not limited to vessel compliance, the maternal immune response, the renin angiotensin response, and placental implantation and angiogenesis. There has also been published concern that maternal vitamin D deficiency may be associated with childhood neurodevelopmental issues including autism. However, the last ACOG CO on UNIVERSAL SCREENING for vitamin D in pregnancy was in 2011…this stated that UNIVERSAL screening is just not recommended (FYI, this was reaffirmed 2021, and is currently being reaffirmed by the OB committee). But this is different than targeted screening. Since the ACOG stance in 2011, despite RCTs of vitamin D supplementation in pregnancy, everything has changed and yet nothing has changed regarding the approach to screening for vitamin D deficiency. Should vitamin D levels be assessed? Are the cutoffs for vitamin D insufficiency and deficiency the same in pregnant patients? Who is the ideal pregnant patient for vitamin D intervention? How can the intervention be optimized? And what’s that link between maternal vit D deficiency and the child’s neurodevelopmental outcomes? There is data to answer these questions, and we will lay it all out in this episode.

The FDA’s approval of the first oral hormonal contraceptive pill, Enovid, in 1960 launched a revolution in women’s reproductive healthcare. From that one initial pill sprang a plethora of oral contraceptive choices, representing estrogen-progestin combinations in standard dose to ultra-low dose options, progesterone only pills, and cyclic or continuous use pre-packaged formulations. According to a survey conducted from 2017 to 2019 by the Centers for Disease Control and Prevention (CDC), around 65% of women aged 15-49 use some form of birth control, with the pill being the most common birth control method used by younger women. Around 20% of women aged 15-29 use oral contraceptives. Similarly, the FDA’s approval of levonorgestrel-based (LNG) emergency contraception (EC) in 1998, and its subsequent approval of the selective progesterone receptor modulator-based option in 2010 (ullipristal acetate or UPA), provided another layer of contraceptive protection during times of unprotected or ill-protected sexual intercourse. More recently, this revolution in medical control over reproductive ability has resulted in the FDA’s approval of the first over-the-counter, norgestrel-only oral contraceptive, the Opill. This move allows the Opill to be available in a variety of venues, from online to local pharmacies and grocery stores. Nonetheless, despite this major success in women's contraception, some suspicions remain. In this episode we will review latest data on Opill and its plan for release in 2024. This has already lead to the potential for a combination OTC pill coming out soon. Have you heard of it? And...does your state already offer OTC hormnal BC? Listen in and find out more.

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There is no controversy regarding the definition of the 2nd stage of labor: it is the phase of labor from 10 cm until complete delivery of the child. However, there has been persistent controversy about what defines a prolonged 2nd stage of labor. In other words, are the hour limits stated by the ACOG “active pushing” or “total duration” in 2nd stage? 🤔 Historically, this has been a very gray area. Even though we have guidance on this going back to 2014 with the ACOG Obstetric Care Consensus 1, “Safe Prevention of the Primary C-Section”, certain phrases within that document caused confusion. Does the ACOG make a distinction between active vs passive 2nd stage of labor? Listen in and find out. 🎙️🎙️🎙️

Mirror Syndrome also known as “triple edema” or Ballantyne syndrome, is a rare disorder affecting pregnant women. Mirror Syndrome is often underdiagnosed or misdiagnosed due to a general unawareness of the condition, and sometimes its preeclampsia-like manifestations. However, until now, the characteristics of Mirror Syndrome have not been fully elucidated. But medicine moves fast, and we now have a better understanding of its presentation, likely contributing factors, and outcomes. Still, some knowledge gaps remain. In this episode we will summarize the data on this terrible, potentially life threatening, obstetrical emergency. Our centerpiece for discussion will be a recent systematic review published in September 2023 in the AJOG with authors from my home state of Texas.

The podcast explores the relationship between technique and chance in perinatal adverse events. Topics discussed include fetal clavicular fractures, Erb's palsy, and post-operative rectus sheath bleeding. The importance of documentation, communication, and distinguishing between tough luck and malpractice cases is also emphasized.

The podcast discusses common myths and misconceptions about OB pyelonephritis, including penicillin allergies and the legitimacy of adverse reactions to medication. It also highlights the importance of checking for fever and other symptoms in UTI diagnosis, as well as the use of Bactrim in the first trimester of pregnancy and its effects on folic acid levels.