TY - JOUR
T1 - Exposure to Selective Serotonin Reuptake Inhibitors in Early Pregnancy and the Risk of Miscarriage
AU - Andersen, Jon Thor Trærup
AU - Andersen, Nadia Lyhne
AU - Horwitz, Henrik
AU - Poulsen, Henrik Enghusen
AU - Jimenez-Solem, Espen
PY - 2014/10/10
Y1 - 2014/10/10
N2 - OBJECTIVE: To investigate whether exposure to selective serotonin reuptake inhibitors (SSRIs) in early pregnancy is associated with miscarriage.METHODS: This was a nationwide cohort study identifying all registered pregnancies in Denmark from 1997 to 2010. All births were identified using the Medical Birth Registry, and all records of induced abortion or miscarriage were gathered from the National Hospital Register. Data on SSRI use were gathered from the National Prescription Register. Cox proportional hazard regression models were used to calculate the hazard of miscarriage in women exposed to an SSRI in early pregnancy and the hazard of miscarriage in women discontinuing treatment before pregnancy.RESULTS: We identified 1,279,840 pregnancies (911,569 births, 142,093 miscarriages, 226,178 induced abortions). Of the 22,884 exposed to an SSRI during the first 35 days of pregnancy, 12.6% (2,883) ended in miscarriage compared with 11.1% among unexposed. The adjusted hazard ratio of having a miscarriage after exposure to an SSRI was 1.27 (95% confidence interval [CI] 1.22-1.33) compared with unexposed. Women discontinuing SSRI treatment 3-12 months before pregnancy also had an increased hazard ratio of having a miscarriage compared to unexposed (1.24, 95% CI 1.18-1.30).CONCLUSION: Women exposed to SSRIs during early pregnancy were at increased risk of miscarriage as were women discontinuing SSRI treatment before pregnancy, and these risks were similar. Therefore, treatment with SSRIs during pregnancy should not be discontinued as a result of fear of miscarriage.
AB - OBJECTIVE: To investigate whether exposure to selective serotonin reuptake inhibitors (SSRIs) in early pregnancy is associated with miscarriage.METHODS: This was a nationwide cohort study identifying all registered pregnancies in Denmark from 1997 to 2010. All births were identified using the Medical Birth Registry, and all records of induced abortion or miscarriage were gathered from the National Hospital Register. Data on SSRI use were gathered from the National Prescription Register. Cox proportional hazard regression models were used to calculate the hazard of miscarriage in women exposed to an SSRI in early pregnancy and the hazard of miscarriage in women discontinuing treatment before pregnancy.RESULTS: We identified 1,279,840 pregnancies (911,569 births, 142,093 miscarriages, 226,178 induced abortions). Of the 22,884 exposed to an SSRI during the first 35 days of pregnancy, 12.6% (2,883) ended in miscarriage compared with 11.1% among unexposed. The adjusted hazard ratio of having a miscarriage after exposure to an SSRI was 1.27 (95% confidence interval [CI] 1.22-1.33) compared with unexposed. Women discontinuing SSRI treatment 3-12 months before pregnancy also had an increased hazard ratio of having a miscarriage compared to unexposed (1.24, 95% CI 1.18-1.30).CONCLUSION: Women exposed to SSRIs during early pregnancy were at increased risk of miscarriage as were women discontinuing SSRI treatment before pregnancy, and these risks were similar. Therefore, treatment with SSRIs during pregnancy should not be discontinued as a result of fear of miscarriage.
KW - Abortion, Spontaneous
KW - Adult
KW - Cohort Studies
KW - Confidence Intervals
KW - Denmark
KW - Depressive Disorder
KW - Female
KW - Humans
KW - Incidence
KW - Infant, Newborn
KW - Pregnancy
KW - Pregnancy Complications
KW - Pregnancy Outcome
KW - Pregnancy Trimester, First
KW - Proportional Hazards Models
KW - Reference Values
KW - Registries
KW - Retrospective Studies
KW - Risk Assessment
KW - Serotonin Uptake Inhibitors
KW - Young Adult
U2 - 10.1097/aog.0000000000000447
DO - 10.1097/aog.0000000000000447
M3 - Journal article
C2 - 25198261
SN - 0029-7844
VL - 124
SP - 655
EP - 661
JO - Obstetrics and Gynecology
JF - Obstetrics and Gynecology
IS - 4
ER -