Dr. Chapa’s OBGYN Clinical Pearls

Latest Episodes:

Fetal Dextrogastria Oct 01, 2025

Show notes

The only structure of fetal gastrointestinal tract (GIT) which is seen on routine second trimester anomaly scan is the fetal stomach. Under normal conditions, the fetal stomach "bubble" is seen on the left side of the fetal abdomen. This is a normal finding on an ultrasound and indicates the stomach's normal position. There are two functions of the fetal GIT: 1. Propulsive action by peristalsis which takes the swallowed amniotic fluid up to the small bowel; 2. Absorption – the amniotic fluid is absorbed through the fetal small bowel. When the stomach is found prenatally to be located on the right side, it is called dextrogastria. Today in our high-risk prenatal clinic, we encountered a patient whose fetus was found to have this rare condition dextrogastria. Is this an isolated issue? What does this mean for clinical outcomes. Listen in for details.

1. Versteegh HP, Adams SD, Boxall S, Burge DM, Stanton MP. Antenatally diagnosed right-sided stomach (dextrogastria): A rare rotational anomaly. J Pediatr Surg. 2016 Feb;51(2):236-9. doi: 10.1016/j.jpedsurg.2015.10.060. Epub 2015 Nov 4. PMID: 26655213.

2. A Case Report Of An Isolated Dextrogastria Diagnosed In First Trimester Ultrasound Screening: https://hjog.org/?p=3540

3. Docx MKF, Steylemans A, Govaert PIsolated dextrogastria in a newbornArchives of Disease in Childhood - Fetal and Neonatal Edition 2015;100:F513.

4. https://www.researchgate.net/publication/43349867_Isolated_dextrogastria_A_case_report

5. Aziz, S., König, S., Noor, H. et al. Isolated dextrogastria with eventration of right hemidiaphragm and hiatal hernia in an adult male. BMC Gastroenterol 22, 56 (2022). https://doi.org/10.1186/s12876-022-02127-x

Surprising C-Section Data Sep 28, 2025

Show notes

Did you know that C-Section birth is referenced in Shakespeare’s Macbeth? Cesarean Section is the most common laparotomy in the world, and yest we are still learning surprising facts about it. This episode we will summarize 2publications which have recently been released. One is from the American Journal of Perinatology (September 2025 ) and the other is from the AJOG (August 2025 ). Does a primary C-section on a laboring uterus have a different risk of PAS in the subsequent pregnancy compared to a non-labored uterus? And what is the percentage of patients who experience “pain” at time of C-section? Listen in for the surprising data.

1. Kashani Ligumsky L, Lopian M, Jeong A, Desmond A, Elmalech A, Many A, Martinez G, Krakow D, Afshar Y. Impact of Labor in Primary Cesarean Delivery on Subsequent Risk of Placenta Accreta. Am J Perinatol. 2025 Sep 16. doi: 10.1055/a-2693-8599. Epub ahead of print. PMID: 40957594.

2. Somerstein, Rachel. I feel pain, not pressure: a personal and methodological reflection on pain during cesarean delivery. American Journal of Obstetrics & Gynecology, Volume 0, Issue 0 (EPub Ahead of Print)

Bell’s Palsy in Pregnancy Sep 26, 2025

Show notes

Just today in clinic, we had a patient, who was well into her third trimester, come to her regular scheduled appointment with new onset left-sided facial droop. Yeah, that’s concerning! A complete history and physical was performed and the diagnosis was made of Bell’s palsy. This is not a rare event and it can be extremely stressful for the affected mother to be because everybody knows facial droop is not normal! And we have recent data regarding this. In July 2025 in the Journal of Plastic, Reconstructive, and Aesthetic Surgery, authors confirmed that Bell’s palsy can have real negative functional and psychosocial implications for those affected. So, in this episode, we are going to discuss Bell’s palsy in pregnancy. How do we differentiate this from the more serious differential, which is a stroke? What about treatment? Listen in for details.

1. Wesley, Shaun R. MD; Vates, G. Edward MD, PhD; Thornburg, Loralei L. MD. Neurologic Emergencies in Pregnancy. Obstetrics & Gynecology 144(1):p 25-39, July 2024. | DOI: 10.1097/AOG.0000000000005575

2. Vrabec JT, Isaacson B, Van Hook JW. Bell's Palsy and Pregnancy.

Otolaryngology--Head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery. 2007;137(6):858-61. doi:10.1016/j.otohns.2007.09.009.

3. Evangelista V, Gooding MS, Pereira L.Bell's Palsy in Pregnancy.

Obstetrical & Gynecological Survey. 2019;74(11):674-678. doi:10.1097/OGX.0000000000000732

4. JPRAS (July 2025): https://www.jprasurg.com/article/S1748-6815(25)00328-6/fulltext

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“CPR” For Decreased Fetal Movement? The CEPRA Trial Sep 23, 2025

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Maternal perception of decreased fetal movement at term occurs in up to 15% of pregnancies and is a cause for maternal and provider concern. All maternal concerns of decreased fetal movement require an assessment of fetal wellbeing. But what about the patient with recurrent episodes of reduced fetal movements at term? Routine induction of labor is not supported solely for decreased fetal movement in a non-growth-restricted fetus, as increased intervention rates (including induction of labor and early term birth) have not demonstrated improved perinatal outcomes and may increase neonatal morbidity, such as respiratory distress and NICU admission. Some international sources (ISUOG) have recognized the cerebroplacental ratio (CPR) as a possible ultrasound tool to investigate possible early placental insufficiency before fetal growth restriction occurs. Is CPR helpful for decreased fetal movements at term? A new publication from the Lancet’s new journal- Obstetrcis, Gynecology, and Women’s Health- states that it is. Is the CPR ultrasound assessment recognized by the ACOG or SMFM? Listen in for details.

1. The cerebroplacental ratio: a useful marker but should it be a screening test? (2025): https://obgyn.onlinelibrary.wiley.com/doi/10.1002/uog.29154#:~:text=The%20ISUOG%20guidelines%20recommend%20using,after%2038%20weeks'%20gestation44.

2. Turner JM, Flenady V, Ellwood D, Coory M, Kumar S.Evaluation of Pregnancy Outcomes Among Women With Decreased Fetal Movements.JAMA logoJAMA Network Open. 2021;4(4):e215071. doi:10.1001/jamanetworkopen.2021.5071.

3. Cerebroplacental ratio-based management versus care as usual in non-small-for-gestational-age fetuses at term with maternal perceived reduced fetal movements (CEPRA): a multicentre, cluster-randomised controlled trial. https://www.sciencedirect.com/science/article/pii/S3050503825000020

4. Hofmeyr GJ, Novikova N. Management of Reported Decreased Fetal Movements for Improving Pregnancy Outcomes. The Cochrane Database of Systematic Reviews. 2012;(4):CD009148. doi:10.1002/14651858.CD009148.pub2.

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New Intrapartum FHT Guidance: Oct 2025 CPG 10 Sep 21, 2025

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In the 1960s, continuous electronic fetal monitoring was introduced as a way to better capture and document the fetal response to labor and uterine contraction pattern. Since then, it has become a fully integrated component of intrapartum care despite its limited ability to prevent neonatal long term neurological complications and fetal death. We have covered intrapartum fetal heart rate patterns several times on this show, and this episode now VALIDATES those prior episodes. In this episode, we will summarize THREE key points from the October 2025 upcoming ACOG CPG #10 on “Intrapartum Fetal Heart Rate Monitoring: Interpretation and Management”. Is there a place for intermittent fetal auscultation intrapartum? What about maternal O2 for fetal resuscitation? Are we ready for “AI fetal heart racing interpretations”? Listen in for details.

1. ACOG CPG 10: Intrapartum Fetal Heart Rate Monitoring: Interpretation and Management (Oct 2025)

2. ACOG PB 205: Vaginal Birth After Cesarean Delivery

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OB? Get Your ZZZZs: Insomnia’s Effects on Pregnancy Sep 18, 2025

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In 2023, we released 2 episodes on obstructive sleep apnea (OSA) and adverse pregnancy. Now, on September 16, 2025, a new publication from JAMA Network Open adds more insights to disturbed sleep and adverse pregnancy outcomes. How does insomnia affect pregnancy? And is there any data on night shift work and its altered circadian rhythms on adverse pregnancy outcomes? Listen in for details.

1. Ross N, Baer RJ, Oltman SP, et al. Ischemic Placental Disease and Severe Morbidity in Pregnant Patients With Sleep Disorders. JAMA Netw Open. 2025;8(9):e2532189. doi:10.1001/jamanetworkopen.2025.32189

2. Cai C, Vandermeer B, Khurana R, et al. The Impact of Occupational Shift Work and Working hours during Pregnancy on Health Outcomes: a systematic Review and Meta-Analysis.

American Journal of Obstetrics and Gynecology. 2019;221(6):563-576. doi:10.1016/j.ajog.2019.06.051.

3. Dominguez JE, Cantrell S, Habib AS, Izci-Balserak B, Lockhart E, Louis JM, Miskovic A, Nadler JW, Nagappa M, O'Brien LM, Won C, Bourjeily G. Society of Anesthesia and Sleep Medicine and the Society for Obstetric Anesthesia and Perinatology Consensus Guideline on the Screening, Diagnosis, and Treatment of Obstructive Sleep Apnea in Pregnancy. Obstet Gynecol. 2023 Aug 1;142(2):403-423. doi: 10.1097/AOG.0000000000005261. Epub 2023 Jul 5. PMID: 37411038; PMCID: PMC10351908.

4. Kader M, Bigert C, Andersson T, et al . Shift and Night Work During Pregnancy and Preterm Birth-a Cohort Study of Swedish Health Care Employees. International Journal of Epidemiology. 2022;50(6):1864-1874. doi:10.1093/ije/dyab135.

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BNP and proBNP in PreE Sep 17, 2025

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Brain-type natriuretic peptide (BNP) and N-terminal proBNP (NT-proBNP) levels originate from the cardiac cells in response to cardiac strain. This may come from a pulmonary embolus, an acute severe infection (sepsis), or cardiomyopathy. But what is the relationship between these 2 cardiac biomarkers and preeclampsia? Can preeclampsia with severe features result in an abnormal rise in these 2 proteins exclusive to heart failure. Listen in to this real case scenario which our on call team cared for.

1. Serum Levels of N-Terminal Pro-Brain Natriuretic Peptide in Gestational Hypertension, Mild Preeclampsia, and Severe Preeclampsia: A Study From a Center in Zhejiang Province, China. Zheng Z, Lin X, Cheng X. Medical Science Monitor: International Medical Journal of Experimental and Clinical Research. 2022;28:e934285. doi:10.12659/MSM.934285.

2.Evaluation of B-Type Natriuretic Peptide (BNP) Levels in Normal and Preeclamptic Women. Resnik JL, Hong C, Resnik R, et al. American Journal of Obstetrics and Gynecology. 2005;193(2):450-4. doi:10.1016/j.ajog.2004.12.006.

3.Increased B-Type Natriuretic Peptide Levels in Early-Onset Versus Late-Onset Preeclampsia. Szabó G, Molvarec A, Nagy B, Rigó J. Clinical Chemistry and Laboratory Medicine. 2014;52(2):281-8. doi:10.1515/cclm-2013-0307.

4. Association of N-Terminal Pro–Brain Natriuretic Peptide Concentration in Early Pregnancy With Development of Hypertensive Disorders of Pregnancy and Future Hypertension.

5. Hauspurg A, Marsh DJ, McNeil RB, et al. JAMA logoJAMA Cardiology. 2022;7(3):268-276. doi:10.1001/jamacardio.2021.5617.

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Vag E2 in Women With CVA HX? Sep 13, 2025

Show notes

Stroke (CVA) is very common in women, who have a higher risk than men over their lifetime; one in five women between the ages of 55 and 75 will experience a stroke. Stroke is a significant concern for women's health, being the third leading cause of death and causing more deaths than breast cancer. While systematic estrogen containing menopausal HT has been considered contraindicated in those with prior CVA history, is local/vaginal E2 therapy safe? A new population-based study gives us some insights. Listen in for details.

1. Recurrent Ischemic Stroke and Vaginal Estradiol in Women With Prior Ischemic Stroke: A Nationwide Nested Case-Control Study; https://www.ahajournals.org/doi/10.1161/STROKEAHA.125.050986

2. NAMS 2022 Position Statement; chrome-https://menopause.org/wp-content/uploads/professional/nams-2022-hormone-therapy-position-statement.pdf

3. Stroke News & Brain Health | Published: August 21, 2025; https://newsroom.heart.org/news/vaginal-estrogen-tablets-may-be-safe-for-postmenopausal-women-who-have-had-a-stroke

4. https://www.obgproject.com/2022/11/21/north-american-menopause-society-releases-2017-hormone-therapy-statement/

5. https://www.goredforwomen.org/en/know-your-risk/risk-factors/risk-of-stroke-in-women-infographic#:~:text=Stroke%20in%20U.S.%20Women%20by,risk%20decreases%20in%20women%20who:

Does Vit B6 Reduce Mastalgia? New Meta-analysis 09/2025 Sep 11, 2025

Show notes

Mastalgia is a common breast complaint in reproductive aged women. Mastalgia can be separated into three categories: 1) cyclical, 2) noncyclical, and 3) extramammary. Vitamin B6 is often cited as a homeopathic (non-prescription/pharmacological) remedy for simple mastalgia. Does the published data support its use? A newly published meta-analysis sheds light on the subject.

1. Sharifipour, F., Siahkal, S.F. & Bagherinia, M. The effectiveness of vitamin B6 in reducing mastalgia: a systematic review and meta-analysis. BMC Women's Health 25, 421 (2025). https://doi.org/10.1186/s12905-025-03991-x

2. ACOG PB 164; reaffirmed 2023

09.10.2025 Sep 10, 2025

Show notes

We are delaying today's program, as stated in this message. We will resume our program as soon as possible. Remembering Charlie Kirk.

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