Selective Serotonin-Reuptake Inhibitors and Risk of Persistent Pulmonary Hypertension of the Newborn
Christina D. Chambers, Ph.D., M.P.H., Sonia Hernandez-Diaz, M.D., Dr.P.H., Linda J. Van Marter, M.D., M.P.H., Martha M. Werler, Sc.D., Carol Louik, Sc.D., Kenneth Lyons Jones, M.D., and Allen A. Mitchell, M.D.
Background Persistent pulmonary hypertension of the newborn(PPHN) is associated with substantial infant mortality and morbidity.A previous cohort study suggested a possible association betweenmaternal use of the selective serotonin-reuptake inhibitor (SSRI)fluoxetine late in the third trimester of pregnancy and therisk of PPHN in the infant. We performed a casecontrolstudy to assess whether PPHN is associated with exposure toSSRIs during late pregnancy.
Methods Between 1998 and 2003, we enrolled 377 women whose infantshad PPHN and 836 matched control women and their infants. Maternalinterviews were conducted by nurses, who were blinded to thestudy hypothesis, regarding medication use in pregnancy andpotential confounders, including demographic variables and healthhistory.
Results Fourteen infants with PPHN had been exposed to an SSRIafter the completion of the 20th week of gestation, as comparedwith six control infants (adjusted odds ratio, 6.1; 95 percentconfidence interval, 2.2 to 16.8). In contrast, neither theuse of SSRIs before the 20th week of gestation nor the use ofnon-SSRI antidepressant drugs at any time during pregnancy wasassociated with an increased risk of PPHN.
Conclusions These data support an association between the maternaluse of SSRIs in late pregnancy and PPHN in the offspring; furtherstudy of this association is warranted. These findings shouldbe taken into account in decisions as to whether to continuethe use of SSRIs during pregnancy.
Source Information
From the Departments of Pediatrics (C.D.C., K.L.J.) and Family and Preventive Medicine (C.D.C.), University of California, San Diego, La Jolla; the Slone Epidemiology Center, Boston University School of Public Health, Boston (S.H.-D., M.M.W., C.L., A.A.M.); and Children's Hospital and Brigham and Women's Hospital, Harvard Medical School, Boston (L.J.V.M.).
Address reprint requests to Dr. Chambers at the University of California, San Diego, Medical Center, 200 W. Arbor Dr., Mail Code 8446, San Diego, CA 92103, or at chchambers{at}ucsd.edu.
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