Cited by 266Pregnancy and Medication ImpactPharmacological Effects and Toxicity StudiesCardiovascular Issues in Pregnancy

Lithium Use in Pregnancy and the Risk of Cardiac Malformations

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Patorno, Elisabetta, Huybrechts, Krista F., Bateman, Brian T., Cohen, Jacqueline M., Desai, Rishi J., Mogun, Helen, Cohen, Lee S., Hernandez-Diaz, Sonia·2017·New England Journal of Medicine

Abstract

BACKGROUND: There has been concern that exposure to lithium early in pregnancy may be associated with a marked increase in the risk of Ebstein's anomaly (a right ventricular outflow tract obstruction defect) in infants and overall congenital cardiac defects, but data are conflicting and limited. METHODS: We conducted a cohort study involving 1,325,563 pregnancies in women who were enrolled in Medicaid and who delivered a live-born infant between 2000 and 2010. We examined the risk of cardiac malformations among infants exposed to lithium during the first trimester as compared with unexposed infants and, in secondary analyses, with infants exposed to another commonly used mood stabilizer, lamotrigine. Risk ratios and 95% confidence intervals were estimated with control for psychiatric and medical conditions, medications, and other potential confounders. RESULTS: Cardiac malformations were present in 16 of the 663 infants exposed to lithium (2.41%), 15,251 of the 1,322,955 nonexposed infants (1.15%), and 27 of the 1945 infants exposed to lamotrigine (1.39%). The adjusted risk ratio for cardiac malformations among infants exposed to lithium as compared with unexposed infants was 1.65 (95% confidence interval [CI], 1.02 to 2.68). The risk ratio was 1.11 (95% CI, 0.46 to 2.64) for a daily dose of 600 mg or less, 1.60 (95% CI, 0.67 to 3.80) for 601 to 900 mg, and 3.22 (95% CI, 1.47 to 7.02) for more than 900 mg. The prevalence of right ventricular outflow tract obstruction defects was 0.60% among lithium-exposed infants versus 0.18% among unexposed infants (adjusted risk ratio, 2.66; 95% CI, 1.00 to 7.06). Results were similar when lamotrigine-exposed infants were used as the reference group. CONCLUSIONS: Maternal use of lithium during the first trimester was associated with an increased risk of cardiac malformations, including Ebstein's anomaly; the magnitude of this effect was smaller than had been previously postulated. (Funded by the National Institute of Mental Health.).

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Authors
Patorno, E., Huybrechts, K. F., Bateman, B. T., Cohen, J. M., Desai, R. J., Mogun, H., Cohen, L. S., & Hernandez-Diaz, S.
Affiliations
Brigham and Women's Hospital (US)
Venue
New England Journal of Medicine
Published
2017-06-08
Volume
376
Issue
23
Pages
2245-2254
ISSN
  • 0028-4793 (ISSN-L)
  • 1533-4406
OpenAlex
W2621713722
Cited by
265
References
42
Citations by year
2026: 19 · 2025: 18 · 2024: 44 · 2023: 23 · 2022: 23 · 2021: 24 · 2020: 33 · 2019: 41 · 2018: 28 · 2017: 12
FWCI
29.23
Type
journal article
Language
en
Open access
Locations
  • New England Journal of Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Mental Health (R01MH100216, K01MH099141)
Topics
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Pregnancy and Medication Impact
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Pharmacological Effects and Toxicity Studies
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Issues in Pregnancy
Keywords
lithium, pregnancy, cardiac anomalies, Ebstein's anomaly, right ventricular outflow tract obstruction, lamotrigine, mood stabilizers, first trimester exposure, congenital heart disease, maternal medication use, dose-response relationship, bipolar disorder in pregnancy, antipsychotic safety in pregnancy, prenatal drug exposure, live birth
MeSH terms
Lamotrigine, Adult, Anticonvulsants, Antidepressive Agents, Bipolar Disorder, Female, Heart Defects, Congenital, Humans, Infant, Infant, Newborn, Pregnancy, Pregnancy Complications, Pregnancy Trimester, First, Triazines, Cohort Studies, Prevalence, Lithium Compounds, Antimanic Agents, Young Adult

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