RESUMEN
PURPOSE: To survey trends of antipsychotic use during pregnancy and examine the associations between the use of quetiapine or any antipsychotic and adverse obstetric and neonatal outcomes. METHODS: Birth register study of 36,083 women who gave birth at Kuopio University Hospital, Finland, between 2002 and 2016. Obstetric and neonatal outcomes between women using quetiapine (N = 152) or any antipsychotic (N = 227) were compared to controls (N = 35,133). RESULTS: Altogether 246 (0.7%) women used antipsychotic medications during pregnancy and 153 (62,2%) of these women used quetiapine. Antipsychotic usage increased from 0.4% to 1.0% during the 15-year follow-up. Women using antipsychotics were more likely to smoke, drink alcohol, use illicit drugs, use other psychotropic medications, and have higher pre-pregnancy body mass index. Quetiapine use was associated with higher risk of increased postpartum bleeding in vaginal delivery (aOR 1.65; 95%CI 1.13-2.42), prolonged neonatal hospitalization (≥5 days) (aOR 1.54; 95%CI 1.10-2.15), and higher placental to birth weight ratio (PBW ratio) (aB 0.009; 95%CI 0.002-0.016). Use of any antipsychotic was associated with a higher risk of gestational diabetes mellitus (aOR 1.64; 95%CI 1.19-2.27), increased postpartum bleeding in vaginal delivery (aOR 1.50; 95%CI 1.09-2.07), prolonged neonatal hospitalization (≥5 days) (aOR 2.07; 95%CI 1.57-2.73), and higher PBW ratio (aB 0.007; 95%CI 0.001-0.012). CONCLUSION: The use of antipsychotic medications increased among Finnish pregnant women from 2002 to 2016. Pregnant women using antipsychotics appear to have a higher risk for some adverse pregnancy and birth outcomes and may benefit from more frequent maternity care follow-ups.