Dr. Chapa’s OBGYN Clinical Pearls

The traditional explanation and assumed pathophysiology of HELLP syndrome stated that it was a late manifestation/further progress of preeclampsia with severe features. But can HELLP present clinically without hypertension? What about without proteinuria? If a patient has lab criteria of HELLP alone, without hypertension, does she still require magnesium sulfate? In this episode, we will summarize data from 3 sources (ACOG practice bulletin on thrombocytopenia, ACOG practice bulletin on gestational hypertension and preeeclampsia, CMQCC hypertension bundle), and answer these questions and more.

The pathophysiology of menopausal hot flashes has remained largely a mystery until about a decade ago when KNDy neurons were found to be the key triggers of the hot flash. Since then, research and development has been going fullsteam to develop a non-hormonal, receptor-based therapy for the common hot flash. In April 2023 in the journal, Obstetrics and Gynecology (the Green Journal), new safety data will be published on the revolutionary new medication, Fezolinetant. With Phase 3 study results already in print, the FDA is projected to rule on this new medication’s approval potentially in May 2023. In this episode, we will review the fascinating biochemistry of KNDy activity and how this new medication works.

The fetal NST is a hallmark of antepartum fetal surveillance and a key component of the BioPhysical Profile (BPP). Historically, and still done today, one of the low-risk interventions for rectifying a non-reactive NST has been the maternal administration of glucose/PO challenge. Is this evidence-based? Does maternal hypoglycemia contribute to a nonreactive NST? In this episode, we will review the data spanning a 40-year interval that has sought to answer this question. And what about fetal movement? Does maternal glucose loading increase perception of fetal movement? Let’s go to the data now.

The Liggins and Howie trial demonstrating the benefit of antenatal corticosteroids (ACSs) on fetal lungs was published in 1972 in the journal Pediatrics. First adopted as weekly injections, ACSs were then found to be associated with decreased birth weights and decreased head circumferences. Hence, weekly administration was abandoned in the late 1990s. But the ACOG/SMFM does still recognize a single repeat dose “based on clinical scenario”, called a rescue dose. Is a rescue dose of steroids associated with altered neurodevelopment in the child? In this episode, we will summarize a brand new study just accepted for publication in the AJOG MFM (the Pink Journal) shedding some light on this question.

This is a brief update regarding our recent podcast on “the French C-section”. Having an Israeli member of our podcast family…is priceless! ❤️Listen to the latest development regarding the extraperitoneal C-section in Israel and how this situation bears similarities to the US approval of ADDYI in 2015. Thank you Liel N.!! 😊😊

In 1999, the CDC had a national plan of action to “completely eliminate syphilis” by the year 2005. Although rates of syphilis did dramatically decrease to record lows during that time, we are now experiencing record HIGH rates of congenital syphilis. Some states are having a close to 500% increase in congenital cases. How did we get to this point? In this episode, we will review and summarize 3 key recent publications regarding the rise of congenital syphilis (Journal Women’s Health Issues [Elsevier]– article in press: AJOG Dec 2022; ACOG Clinical Expert Series May 2020) which have resulted in the SCARY STATE of SYPHILIS. We will also review the JH reaction, and provide a clinical pearl regarding the interval restriction between doses of Penicillin G injections, AND we will summarize the time frames permitted to allow a decrease in RPR titers after therapy. Lots of material covered in this episode! 👍

The historic saying is, “there is nothing new under the sun”. So true! Such is the case with the extraperitoneal C-section. First advocated in 1823 by French obstetrician, Louis-Auguste Baudelocque, this complex technique fell to the waste-side with the advent of antibiotic availability. But now, this extra-peritoneal cesarean technique, A.K.A. the "French AmbUlatory Cesarean Section" technique (FAUCS), is trending on social media. Is this safe? Does this have any advantage over a traditional C-section? And why has one country recently BANNED this procedure? In this episode we will present this novel technique and explain why some are calling for caution in its adoption.

The “cure” for preeclampsia is NOT delivery. Preeclampsia is an important signal for future cardiovascular complications once pregnancy is over. While there may not be a true “cure”, we do have options for chemoprophylaxis of preeclampsia. Currently, only low-dose aspirin is ACOG/SMFM endorsed for preeeclampsia prevention. But pravastatin is gaining steam. Pravastatin was previously classified (in the now discontinued FDA label) Category X. However, the FDA recently removed the warning regarding use of statins in pregnancy, resulting from the favorable data on pravastatin as a potential chemoprophylactic agent against preeclampsia. While short term fetal safety has already been documented, there was a gap in data regarding long-term neurodevelopmental outcomes in children exposed to this medication in- utero. But new data has some reassuring findings (with a CAVEAT). In this episode, we will highlight a soon-to-be released publication in the AJOG, which is the first to report on the long-term neuromotor, cognitive, and behavioral outcomes of children exposed to pravastatin in utero.

Some obstetrical publications discuss adverse perinatal outcomes based on a short interpregnancy interval (IPI). A separate, yet related topic, is a short interdelivery interval (IDI). Most obstetrical care providers are aware of the adverse obstetrical outcomes following a short IPI. However, short IPI has also been linked to adverse neurodevelopmental disorders in the child. Are repeat fetal growth ultrasounds indicated in a pregnancy following a short IPI? Is antepartum fetal surveillance indicated? In this episode, we will tackle the short interpregnancy interval, and we will end the podcast with the Level C guidance regarding pregnancy management following a short IPI.

In 2018, the ACOG recommended immediate induction of labor/delivery for patients with PPROM, who had sure gestational dating, and were at 34 weeks and 0 days or more. This was in order to reduce the risk of neonatal sepsis. This changed, however, in 2020 with ACOG Practice Bulletin 217 which discussed expected management for PPROM in the late preterm interval. Nonetheless, as is our tagline for this podcast, “medicine moves fast”. In February 2023, a current commentary was published in BJOG adding a cautionary note to the option of expected management in the late preterm interval. In this episode, we will review the acog guidelines, review GBS culture versus NAAT, and summarize this current commentary from BJOG. What is the one clinical factor that should be considered in planning for expected management with PPROM in the late preterm interval? We will explain it in this episode.