Dr. Chapa’s Clinical Pearls.

Well, in this episode we have 2 very interesting and challenging clinical situations. These come from real world clinical encounters so we thought we would share these with you because they are brain teasers and should be discussed. They both have to do with OB ultrasound. First, is there a “minimal” CRL to estimate gestational age? In other words, is there a CRL that is too small to be accurate? It’s an intriguing question and we will give an answer! Second, in women with regular and predictable menstrual cycles that are every 21 or 35 days, how to we “reconcile” a CRL EGA since that CRL algorithm is based on a “typical 4-week cycle”? How can we? Should we adjust the sono dating? WE will review in this episode. PLUS, we will review the latest data on how AI can greatly impact gestational age calculation via ultrasound. So, we have 2 questions, and we will give 2 answers (2 x2)…Listen in for details.

Acetaminophen (Paracetamol) is a common over-the-counter medication that has gained substantial media attention regarding its use by pregnant women. Although estimates vary considerably, most studies and surveys report that around 40–65% of women take acetaminophen sometime during their pregnancy. Historically considered safe, concern was initially raised back in 2014 with a JAMA Pediatrics publication stated that use in pregnancy lead to ADHD in the offspring. Seven years later, in 2021, a consensus statement published in Nature Reviews Endocrinology suggested that acetaminophen use in pregnancy might increase the risk of neurodevelopmental and urogenital tract abnormalities in offspring and called for “precautionary action”. This lead tgo an ACOG response back in Sep 29, 2021 (we will review). This is very controversial. Today, Dec 5, 2024, a new clinical perspective was published in Obstetrics & Gynecology adding another flavor to the mix. Is acetaminophen a direct cause of fetal harm? Listen in for details!

In November 2013, ACOG issued the Hypertension in Pregnancy Task Force Report recommending daily low-dose aspirin (81mg) beginning in the late 1st trimester for women with a history of early-onset preeclampsia and preterm delivery at less than 34 0/7 weeks, or for women with more than one prior pregnancy complicated by preeclampsia. The following year, the USPSTF published a similar guideline, although the list of indications for low-dose aspirin use was more expansive. Since then, the ACOG has issued new guidance on low-dose aspirin, in 2018 and 2021. Nonetheless, while criteria for use has evolved, the dosage recommended has remained as 81 mg. But MEDICINE MOVES FAST, and a new Expert Review in the AJOG MFM is making a case for 162mg. Are we underdosing low-dose aspirin for prevention of preeclampsia? A litany of data says YES. Listen in for details.

The first successful births from frozen eggs were twins, born in Australia in 1986. IVF serves a valuable role for those with persistent infertility issues or other conditions where natural conception is hindered. Although oocyte cryopreservation was initially used as a fertility preservation strategy for medical indications, currently, it is increasingly used to circumvent age-related infertility. This process of elective egg retrieval and cryopreservation- targeting women in their 20s- has gotten out of hand! Mainly due to social media, Gen Z women are panicking about their fertility. Should They Be? For decades, the age of 35 has been seen as a “demarcation line” for female fertility. Before 35, the theory often goes, most women will have little trouble conceiving, but at that point, fertility falls off a cliff. This misunderstanding of natural fertility processes, spurred on by false information on social media, has led to 20-somethings calling for egg retrieval and egg freezing. The dread of age 35 is so pervasive that its effect bleeds backward in time, with women in their early 30s—and yes, sometimes even in their late 20s—already feeling as if they are behind in the race against their “biological clock.” But the reality of fertility “loss” is much more complicated then just “falling off a cliff” and should be viewed more as of a natural “slope” rather than a “cliff”. About a decade after it shed its “experimental” label from the ASRM, oocyte retrieval and cyropreservation has become ubiquitous in our social media culture and has ballooned in popularity, with over a million frozen eggs or embryos stored in the United States today. It has done little, however, to materially change women’s lives. The ASRM has an ETHICS COMMITTEE OPINION (2024) on this very thing. Is 35 really a fertility cliff? Or it it 32? Is egg freezing in late or early 30s the best way to go for delayed fertility? Listen in for details as we set the record straight.