Using Past Placental Complications to Predict Future Risk
This study by Hiersch et al. (Obstetrics Gynecology, 2017) sought to determine if looking at a woman’s previous first two deliveries could help determine risk of placenta-mediated complications during her third delivery.
Retrospective Cohort Study
4,472 women who had three consecutive singleton deliveries were surveyed. 5.9% had placenta-mediated complications during their third delivery. Placenta-mediated complications included hypertensive disorders, placental abruption, and small for gestational age, with the latter being the most common complication identified in this cohort. The risk of placenta-mediated complications during the third delivery was highest in women who had a similar complication during both previous pregnancies. Risk was also higher in woman who had complications in their second delivery, compared with complications only during the first delivery. Women who have experienced placenta-mediated complications in their most recent pregnancy have a greater chance of experiencing complications during their subsequent pregnancy and providers should be on alert for SGA, which had a significant risk for recurrence.
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