332: Maternal use of SSRIs during pregnancy - neonatal outcomes in correlation with placental histopathology


      The association between maternal Selective Serotonin Reuptake Inhibitors (SSRIs) exposure during pregnancy and adverse pregnancy outcomes is controversial. We aimed to investigate the association between prenatal SSRIs exposure and pregnancy outcomes with correlation to placental histopathology.

      Study Design

      The study group included all singleton pregnancies with maternal SSRIs use throughout pregnancy (SSRIs group) that had a full placental histopathology-report. The control group was matched in a 1:1 ratio with unexposed pregnancies matched by year, mode of delivery, gestational-age, and maternal age. Pregnancy and placental reports of both groups were reviewed. Placental lesions were classified according to the current “Amsterdam” criteria. Adverse neonatal outcome was defined as ≥1 early neonatal complications. Multivariable regression analyses were performed to identify independent associations with adverse neonatal outcome and with specific placental lesions.


      Included were 82 cases of maternal SSRIs use and 82 matched controls. The SSRIs group had higher rates of smoking (p< 0.001), lower birthweights (2948±599 vs. 3331±647 gr, p< 0.001), higher rates of meconium (p=0.009), NICU admissions (p< 0.001), and composite adverse neonatal outcome (32.9% vs. 8.5%, p< 0.001). Placentas from the SSRIs group were characterized by lower birth-weight/placental-weight ratio (p=0.02) and higher rates of fetal vascular malperfusion (FVM) lesions (23.1% vs. 9.7%, p=0.03). Using multivariable regression analysess (table) GA < 37 weeks (aOR=2.1 95% CI 1.7-4.6), and SSRI use (aOR=1.7 95% CI 1.3-3.9) were independently associated with composite adverse neonatal outcome, while GA < 37 weeks (aOR=1.6 95% CI 1.2-3.4), SSRI use (aOR=1.3 95% CI 1.1-2.6), and smoking (aOR= 1.2 95% CI 1.1-4.0) were independently associated with FVM lesions.


      Maternal SSRIs use during pregnancy was independently associated with adverse neonatal outcome and placental FVM lesions. Prospective studies are needed to further study this association.
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