Dr. Chapa’s OBGYN Clinical Pearls

On May 19, 2023, the FDA cleared a novel biomarker serum test for the risk stratification for severe preeclampsia in hypertensive pregnant women. This clearance is the first given to any blood-based biomarker test for assessing preeclampsia risk. The company is Thermo Fisher Scientific (no disclosures). But what does this test actually check for? Who qualifies for this? And what was the clinical i...

The 3rd stage of labor is the time from child's birth to delivery of the placenta. Delayed placental separation and expulsion is a potentially life-threatening event because it hinders expected postpartum uterine contraction, which can lead to PPH. The concept of umbilical vein injection of a variety of substances (saline, pitocin, plasma expanders) is nothing new. It was first described in the 19...

Although labor epidural remains the gold standard for labor analgesia, some patients may opt for a trial of a less invasive analgesic agent. While IV/IM narcotics are an option, others may prefer a trial of nitrous oxide (N2O). In this episode, we will review the crazy history of this useful inhalational agent, and how it has ties to the manufacturing of the Colt45 handgun, how it transformed dent...

Just the other day I received a text from one of our wonderful FM attendings in our group concerned about refilling a patient’s Lamictal in early pregnancy. When asked if that was acceptable to do, I quickly answered ABSOLUTELY. We’ve come a long way in understanding bipolar disorder and a long way since lithium was first described for its use. While its use in psychiatry dates to the mid-19th cen...

The ACOG recommends exclusive breastfeeding for the first 6 months of life, with continued breastfeeding while complementary foods are introduced during the infant’s first year of life, or longer, as mutually desired by the woman and her infant (ACOG CO 820; 2021). Problems may arise that can keep women from achieving their breastfeeding goals, and only 25.4% of women are breastfeeding exclusively...

This is our second episode in the format of “You Asked, We Answered!” In this episode we will clarify and discuss 4 topics currently active: (1) Is the FDA approving OTC Birth Control? What is the progestin in the OPill? Do you know what “Free the Pill” is? We’ll discuss here. (2) Why did the USPSTF change the MMG screening rec to age 40? Has’nt the ACOG already recommended that? And what did the...

Historically, governmental and professional societies referred to gestational "completed" weeks in their definitions of preterm or term deliveries. But this term of "completed weeks" has remained a point of confusion for clinicians and researchers alike. The ACOG favors simply stating the gestational age as clear designations of weeks and days (e.g., 34 weeks 5 days) rather than "completed weeks"....

Obstructive sleep apnea (OSA) affects nearly 30 million people in the United States. OSA isn’t just a disruption to pregnant women’s sleep, it is linked to serious pregnancy complications. In this episode will summarize the latest research on OSA and disorganized sleep patterns and their associated pregnancy outcomes. Should we screen for this in pregnancy? Is CPAP safe in pregnancy? Should these...

Stillbirth is one of the most common adverse pregnancy outcomes, occurring in 1 in 160 deliveries in the United States. The optimal interpregnancy interval (IPI) after stillbirth is unclear. Currently, many organizations recommend IPIs greater than 18 months due to findings that, after live birth, a short IPI is associated with increased risk of spontaneous preterm birth, small for gestational age...

The ACOG defines FGR as fetuses with an estimated fetal weight or abdominal circumference that is less than the 10th percentile for gestational age (ACOG PB 227). BUT, some argue against this cut off. There may be a subgroup of AGA fetuses with placental insufficiency who display slowing of fetal growth trajectory while in utero, but do not end up with a birthweight

Can you believe that in 1977, the public health guidelines issued by the National Institutes of Health suggested a two-drink-per-day limit for pregnant women? It's TRUE. Ethanol had even been investigated, and promoted, and an "effective tocolytic agent". We now, of course, understand that there is no safe amount of ethanol use during pregnancy. Our understanding of FASD has evolved over the years...

Epidural anesthesia remains the gold standard for relieving labor pain. Currently, there are 3 techniques for providing epidural related analgesia (traditional epidural, combined spinal- epidural, and dural scrape/puncture epidural). A controversial subject dating back to the 1990s, epidural related maternal fever (ERMF) has been extensively studied. In this episode, we will summarize two recent p...

Medical/Nursing simulations which focus on high-acuity, low-frequency crisis events improve team dynamics, team morale, and most importantly patient outcomes. One such high-acuity, low-frequency event is malignant hyperthermia (MH). On labor and delivery (L&D) units, neuraxial (spinal and epidural) blocks are the safest and most commonly used anesthetics. However, general anesthesia is performed w...

One of the sources of ideas for our podcast topics is our daily clinical practice. During my recent shift in ultrasound clinic, we encountered 4 clinical scenarios which became wonderful teaching opportunities at that moment. In this episode, we will share these common- at times, daily – clinical dilemmas, and we will provide evidence-based, easy answers!

In June 1999 the FDA approved the first continuous glucose monitor for diabetic intervention. We have come along way since 1999. Continuous glucose monitors (CGMs) come in 2 different varieties: real-time CGM, and intermittent/“flash” monitor devices. The use of these devices in pregnancy has exponentially grown. In this episode, we will summarize the key findings from the landmark study, publishe...

You asked… We did! Listen in and find out what this means.

It’s a rather uncommon, but not rare, phenomenon: the incidental hCG finding in a postmenopausal patient. What are we supposed to do with that? Is this automatically cancer? In this episode, we will highlight a real clinical case from one of our podcast listeners, Cynthia. We will review the likely causes of low-level hCG levels in a postmenopausal woman (who is not pregnant). You may be surprised...

The earliest studies of misoprostol’s use in cervical ripening and labor induction were done by South American investigators, who reported their experience using intravaginal misoprostol. This was published in the Lancet in 1992. Despite its widespread incorporation into obstetrical practice, there’s still some lack of uniformity in its administration. Is there a cumulative maximum dose allowed fo...

The concept of measuring intrauterine contractions strength was first proposed in 1949, and eventually published in 1952. The use of an IUPC is well ingrained in modern obstetrical/intrapartum practice. Even though it is so commonly performed, we tend to forget some potential limitations and possible risks of this procedure. In this episode, we will review the history and purpose of the IUPC and r...

Once considered on the fringe of main-stream medicine, “alternative therapies” are becoming more accepted into clinical practice. Such is the case of psilocybin (a mushroom extract) for certain mood disorders. 🍄 And now, another mushroom extract (AHCC) has gained attention in gynecology. Could this extract help eliminate the most common viral STI? Is this evidence-based? The research may surprise...

We ❤️ our podcast community! Over the last 3 recent episodes, we have received similar “themed“ listener questions. So in this episode, we are going to respond to some recent inquiries regarding three recent episodes: 1. combination birth control and estrogen levels (and Perimenopausal use), 2. vaginal progesterone for patients without a history of preterm birth, and 3. the use of vaginal dilators...

I recently had a patient (young reproductive age, without prolapse or urinary incontinence) ask me about using the “Jade Egg” vaginally for better sex. Women’s sexual intimacy is a big dollar commercial industry. What’s the history behind this Jade Egg and/or other vaginal insertion weights? Is there a benefit to using these inside the vagina for pelvic floor training and enhanced sexual intimacy?...

Presence of meconium stained membranes/placental tissue has been used in medico-legal cases by both plaintiffs and the defense alike. Using the presence of meconium stained tissue has been used as a tool to “timeline” fetal hypoxia. Is this evidence-based? In the session, we will review the historical data (1985) that fueled this concept, and give the latest scientific and medical expert opinion r...

Oh, the ever evolving drama of “progesterone in high risk obstetrics”. Today, April 13, 2023, the SMFM released its Special Statement response to the recent change in the progesterone PTB prevention landscape. Where does cerclage fit in? In this episode we will summarize the current recommendation for cerclage for preterm birth prevention and how it fits in to the vaginal progesterone story. Is ce...

We have come a long way in our understanding regarding the safety of intrauterine contraception. Once withheld from adolescents and immediately postpartum patients, the safety in both populations is now well established. Postpartum IUD/IUS placement is a balance between risk of expulsion and patient loss to follow up. In this episode, we will summarize a new RCT from JAMA discussing this very subj...