• Krista F Huybrechts, Brian T Bateman, Kristin Palmsten, Rishi J Desai, Elisabetta Patorno, Chandrasekar Gopalakrishnan, Raisa Levin, Helen Mogun, and Sonia Hernandez-Diaz.
• Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts2Harvard Medical School, Boston, Massachusetts.
• JAMA. 2015 Jun 2; 313 (21): 214221512142-51.

ImportanceThe association between selective serotonin reuptake inhibitor (SSRI) antidepressant use during pregnancy and risk of persistent pulmonary hypertension of the newborn (PPHN) has been controversial since the US Food and Drug Administration issued a public health advisory in 2006.ObjectiveTo examine the risk of PPHN associated with exposure to different antidepressant medication classes late in pregnancy.Design And SettingCohort study nested in the 2000-2010 Medicaid Analytic eXtract for 46 US states and Washington, DC. Last follow-up date was December 31, 2010.ParticipantsA total of 3,789,330 pregnant women enrolled in Medicaid from 2 months or fewer after the date of last menstrual period through at least 1 month after delivery. The source cohort was restricted to women with a depression diagnosis and logistic regression analysis with propensity score adjustment applied to control for potential confounders. EXPOSURES FOR OBSERVATIONAL STUDIES: SSRI and non-SSRI monotherapy use during the 90 days before delivery vs no use.Main Outcomes And MeasuresRecorded diagnosis of PPHN during the first 30 days after delivery.ResultsA total of 128,950 women (3.4%) filled at least 1 prescription for antidepressants late in pregnancy: 102,179 (2.7%) used an SSRI and 26,771 (0.7%) a non-SSRI. Overall, 7630 infants not exposed to antidepressants were diagnosed with PPHN (20.8; 95% CI, 20.4-21.3 per 10,000 births) compared with 322 infants exposed to SSRIs (31.5; 95% CI, 28.3-35.2 per 10,000 births), and 78 infants exposed to non-SSRIs (29.1; 95% CI, 23.3-36.4 per 10,000 births). Associations between antidepressant use and PPHN were attenuated with increasing levels of confounding adjustment. For SSRIs, odds ratios were 1.51 (95% CI, 1.35-1.69) unadjusted and 1.10 (95% CI, 0.94-1.29) after restricting to women with depression and adjusting for the high-dimensional propensity score. For non-SSRIs, the odds ratios were 1.40 (95% CI, 1.12-1.75) and 1.02 (95% CI, 0.77-1.35), respectively. Upon restriction of the outcome to primary PPHN, the adjusted odds ratio for SSRIs was 1.28 (95% CI, 1.01-1.64) and for non-SSRIs 1.14 (95% CI, 0.74-1.74).Conclusions And RelevanceEvidence from this large study of publicly insured pregnant women may be consistent with a potential increased risk of PPHN associated with maternal use of SSRIs in late pregnancy. However, the absolute risk was small, and the risk increase appears more modest than suggested in previous studies.

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