Dr. Chapa’s OBGYN Clinical Pearls

Polycystic ovary syndrome (PCOS) is the most common endocrine disorder and one of the most frequent causes of infertility in women. It affects 5–20% of women of childbearing age. The pathogenesis of PCOS is still not fully understood; however, insulin resistance (IR) is known to have a central role in its pathogenesis. According to a cross-sectional study, IR is present in 75% of lean and 95% of o...

In 1990, the ACOG released the “Perinatal Hepatitis B Prevention Program“. OB healthcare workers have doing universal screening for Hepatitis B using HBsAg in each pregnancy, ever since. However, there is a new guidance being released in September 2023 from the ACOG. This new guidance aligns with the national Hep B screening and testing recommendations from the CDC released March 2023. Are you fam...

OK, OK…we all get that past history of DVT related to hormonal exposure is a true and persistent contraindication for estrogen birth control. We get that. But what about the incidental presence of lower extremity varicose veins? Are varicose veins a contraindication to estrogen containing birth control? After all, some data has linked superficial varicose veins to the development of DVT. That must...

On August 21, 2023, the FDA approved a new RSV vaccine for maternal use, ideally in the late third trimester. However, there are some nuances and some cautionary notes here! In this episode, we will review the phase 3 data, which fostered the FDA approval and review the nuances to this study. Are we ready for mass incorporation of the maternal RSV vaccine into clinical practice? The answer quite s...

In 2015, the ACOG released its Committee Opinion on "Endometrial Intraepithelial Hyperplasia", or EIN (CO 631). EIN is of clinical significance because it is often a precursor lesion to adenocarcinoma of the endometrium. Making the distinction between hyperplasia and true precancerous lesions or true neoplasia is super important because their differing cancer risks must be matched with an appropri...

Recently, a horrific and unimaginable birth event made national (USA) news. A case of shoulder dystocia resulted in an extremely morbid and rarely witnessed complication. On August 16, 2023, an extremely important review article was released (ahead of print) in the American Journal of ObGyn. This article summarizes important key aspects and tips for the proper performance of rescue maneuvers for s...

Access to effective oral emergency contraception is vital, now more than ever. While use of either levonorgestrel or ulipristal is endorsed by the ACOG, pharmacodynamic and clinical data does show that ulipristal has the efficacy advantage. Although the process of ovulation is directed by the LH surge, it is also put into action by prostaglandin resulting from COX2 activity. So, can the addition o...

Persistent genital arousal disorder (PGAD), now called Genito-Pelvic Dysesthesia, was first described by Leiblum and Nathan in 2001 in a five-patient case series. This is now a well-recognized pelvic floor/genital abnormality with a consensus statement being released in 2019 by the International Society for the Study of Women's Sexual Health. Are you familiar with this condition? It is a source of...

The definition of recurrent pregnancy loss (RPL) in the US is 2 or more consecutive failed clinical pregnancies documented by ultrasound or histopathology, while, in the United Kingdom, the definition is as having 3 or more consecutive early pregnancy losses. Up to 50 percent of cases of recurrent pregnancy loss lack a clear etiology. Where do we stand, in 2023, in regards to our understanding of...

Perineal trauma after vaginal birth is common, with approximately 9 of 10 women being affected. Second-degree perineal tears are twice as likely to occur in primiparous births, with a incidence of 40%! Obstetrical lacerations of all degrees can lead to significant physical and even psychological morbidity, and have been identified as an independent risk factor for sexual dysfunction- which could l...

In 2019, brexanolone, better known as Zulresso, became the first postpartum depression (PPD) drug to receive FDA approval. While we have previously discussed this IV medication for PPD in other episodes, there is now a novel oral version of this antidepressant which has made the news as of last week (ie, early august 2023). That medication was known as SAGE 217 during the clinical trials, but it i...

In our most recent episode on vaginal prep at C-section, we referenced a parallel topic where individual data pieces seem to be contradictory: prophylactic TXA at time of cesarean section. In that past episode, we referenced a systematic review and meta-analysis that showed prophylactic TXA was indeed beneficial. Well… we are going to build on that data regarding prophylactic TXA in this quick/tar...

With improvements in the screening & treatment of Breast Ca, the number of female survivors continues to rise, with a reported 5-year survival rate of up to 90%. However, several of the systemic treatments for breast cancer, including endocrine therapy, chemotherapy, and radiotherapy, can result in a new or worsened hypoestrogenic state. Up to 70% of postmenopausal women will develop symptoms of g...

CS is the most important risk factor for postpartum infection with a 20-fold increase compared to the vaginal delivery route. For post-cesarean section metritis, infection is considered to be primary due to ascending bacteria from the vagina. Although antibiotic prophylaxis is thought to reduce postoperative infections, it has little effect on bacterial colonization of the vagina. Over the past 20...

Venous thromboembolic events (VTE) are among the top three causes of maternal death in developed countries and prevention with thromboprophylaxis has been identified as the most readily implementable means of reducing maternal mortality from VTE. Most guidelines address VTE prophylaxis after cesarean section, and/or in those with thrombophilias- not after vaginal delivery alone. The ACOG does not...

We are still in an opioid crisis state in the US. Have you heard of Kratom? It is likely at your neighborhood health food store or even on the counter at your local gas station. A derivative of the coffee plant, Kratom is making national headlines. Whether Kratom, a legal, widely available herbal supplement, should be classified as an opioid is contentious. Although the US Food and Drug Administra...

In 2019, the ACOG released CO 767 discussing “Emergent Therapy for Acute-Onset, Severe Hypertension During Pregnancy and the Postpartum Period”. currently, 3 meds are recommended for the treatment of emergent hypertension in pregnancy: oral nifedipine, IV, labetalol, and IV hydralazine. But which one is “better” at normalizing blood pressure? A new meta-analysis, published on July 24, 2023, provid...

We have learned so much about the natural progression of HPV induced cervical abnormalities. In 2019/2020, the ASCCP published its updated guidance using a “risk-based” algorithm for management of cervical intraepithelial neoplasia. Traditionally, HPV vaccination was considered ineffective once cervical dysplasia already was present. But recent data has proven this concept incorrect! In this episo...

There are, indeed, FDA indicated applications for purified, amniotic membrane (wound healing). Is there also a role for the use of purified amniotic fluid as a “regenerative medicine” treatment option? Can amniotic fluid injections help repair osteoarthritis and aching joints? Can it be used as EYE DROPS for dry eyes? The subject is trendy on certain social media channels and on certain websites....

Skin conditions can't affect pregnancy outcomes, right? After all, the skin is just the skin. WRONG! As a chronic inflammatory disease, hidradenitis suppurativa (HS) exemplifies the link between integumentary and comorbid systemic disease through shared inflammatory pathways. Patients have double the comorbidity burden compared with the general population, and hidradenitis suppurativa has independ...

In Feb 2023, the USPSTF recommended that clinicians “screen for hypertensive disorders of pregnancy”. Specifically, they stated that “measuring blood pressure at each prenatal visit is the best approach”. Mind blowing I know. 😳😊 But sarcasm aside, a new publication- set to be released next month in AJOG (Slade LJ et al; Aug 2023)- validates this recommendation…not that it needed validation, for...

On April 5,2023 the U.S. FDA withdrew its approval of Makena and generic forms of 17-a hydroxyprogesterone caproate for the prevention of recurrent preterm birth. Having the only medication which had been FDA approved for the prevention of preterm birth taken away, has left clinicians investigating other possible strategies that can cause a dent in preterm birth rate. As Bacterial vaginosis (BV) i...

FYI. We just released our episode for today, July 14, 2023, and will be out until July 23!

Its hard to be pregnancy in the late third trimester, especially in a HOT state like TEXAS in the summer. Pregnant individuals will try just about anything "to just get this baby to come out already!" Historically, walking, spicy foods, and SEX have been "employed" to get the labor process going. Does it work? In this episode we will look at the data examining whether labor can induce spontaneous...

There’s no such thing as a “false positive syphilis confirmation test”, is there? After all… It’s right there in the name, CONFIRMATION test! Well, not all positive confirmation tests are true positives, especially when that test is the FTA-ABS. Yes, it’s true, the specificity for this is very good between 95 to 98%. But there are cases of BFPs (Biologic False Positives), which have been reported...