OB/GYN Clinical Alert
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What Is the Risk of CT Exposure Before Conception?
In this retrospective cohort study among 5,142,339 pregnancies in Ontario, Canada, exposure to preconception computed tomography (CT) was weakly associated with spontaneous pregnancy loss (adjusted hazard ratio [aHR], 1.08; 95% confidence interval [CI], 1.07 to 1.08 for one CT scan; aHR, 1.14; 95% CI, 1.12 to 1.16 for two CT scans; and aHR, 1.19; 95% CI, 1.16 to 1.21 for three or more CT scans). For the 3,451,968 live births, there was a similar weak association with congenital anomalies (aHR, 1.06; 95% CI, 1.05 to 1.08 for one CT scan; aHR, 1.11; 95% CI, 1.09 to 1.14 for two CT scans; and aHR, 1.15; 95% CI, 1.11 to 1.18 for three or more CT scans).
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Antenatal Corticosteroids for the Periviable Fetus at 22 Weeks of Gestation
The 2021 American College of Obstetricians and Gynecologists/Society for Maternal-Fetal Medicine practice advisory significantly increased the use of antenatal corticosteroids at 22 weeks of gestation in U.S. hospitals planning neonatal resuscitation, highlighting both the powerful influence of clinical guidelines on practice patterns and the persistence of disparities driven by sociodemographic factors.
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Comparison of the Mini and Standard Copper IUD
This Phase III randomized clinical trial demonstrated a three-year cumulative pregnancy rate of 4.8% (95% confidence interval, 2.75 to 6.86) for the NTCu380 mini intrauterine device (IUD), with similar discontinuation rates between the mini copper IUD and the TCu380A standard copper IUD (51.3% vs. 57.3%, P = 0.07), but fewer discontinuations for bleeding and pain for the mini copper IUD (14.5% vs. 27.3%, P < 0.001).
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The Proton Pump Inhibitor Use and Hypertension Link in Menopausal Women
In a large study, long-term use of proton pump inhibitors in menopausal women was associated with an increased risk of developing hypertension.