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Abstract Title:

Benzodiazepine Use During Pregnancy Alone or in Combination With an Antidepressant and Congenital Malformations: Systematic Review and Meta-Analysis.

Abstract Source:

J Clin Psychiatry. 2019 Jul 9 ;80(4). Epub 2019 Jul 9. PMID: 31294935

Abstract Author(s):

Sophie Grigoriadis, Lisa Graves, Miki Peer, Lana Mamisashvili, Cindy-Lee Dennis, Simone N Vigod, Meir Steiner, Cara Brown, Amy Cheung, Hiltrud Dawson, Neil Rector, Melanie Guenette, Margaret Richter

Article Affiliation:

Sophie Grigoriadis

Abstract:

OBJECTIVE: To summarize the effects of antenatal benzodiazepine exposure as monotherapy and in combination with antidepressants on the risk of congenital malformations.

DATA SOURCES: MEDLINE, PsycINFO, CINAHL, Embase, and the Cochrane Library were searched from inception to June 30, 2018, using controlled vocabulary and keywords (eg, prenatal, benzodiazepines, malformation).

STUDY SELECTION: English-language cohort studies with prospectively collected data on the risk of malformations in benzodiazepine-exposed and -unexposed offspring were evaluated. 23,909 records were screened, 56 studies were assessed for eligibility, and 8 studies were included.

DATA EXTRACTION: Quality was assessed by 2 independent reviewers and data extracted. Random-effects models were used for outcomes (≥ 3 studies). Subanalyses examined effect of potential moderators including study quality and timing of exposure, among others.

RESULTS: Prenatal benzodiazepine use was not associated with an increased risk of congenital malformations (odds ratio [OR] = 1.13; 95% CI, 0.99 to 1.30, 8 studies, n = 222/5,195 exposed and 64,335/2,082,467 unexposed), including with first trimester exposure specifically (OR = 1.08; 95% CI, 0.93 to 1.25, P = .33; 5 studies, n = 181/4,331 exposed and 64,308/2,081,463 unexposed). There was no significant association with cardiac malformation following exposure (OR = 1.27; 95% CI, 0.98 to 1.65, P = .07; 4 studies, n = 61/4,414 exposed and 19,260/2,033,402 unexposed). However, concurrent use of benzodiazepine and antidepressants during pregnancy was associated with a significantly increased risk of congenital malformations (OR = 1.40; 95% CI, 1.09 to 1.80, P = .008; 3 studies).

CONCLUSIONS: Benzodiazepine exposure during pregnancy does not appear to be associated with congenital malformations or with cardiac malformations specifically. There may be an increased risk of congenital malformations when benzodiazepines are used in conjunction with antidepressants, suggesting that caution with this combination is warranted.

Study Type : Meta Analysis, Review

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