Obstetric anesthesia

Opioid analgesic exposure during the first trimester of pregnancy and the risk of major congenital malformations in infants: a systematic review and meta‐analysis †

AnaesthesiaPublished Systematic review and meta-analysis of observational studies

Pooled result · Major congenital malformations overallResult — go to the resultRelative risk 1.04 95% CI 0.98–1.11

Authors' conclusion

Although the meta-analysis did not indicate substantial increased risk for most malformations examined, this risk remains uncertain due to the methodological limitations of the included studies.

Study context

Population
Infants exposed to opioid analgesics in the first trimester (excluding opioid agonist therapy or illicit opioid use)12 studies
Comparison
First-trimester opioid analgesic exposure vs unexposed
Outcome
Major congenital malformations
Methodological detailsrandom-effects meta-analysis, ROBINS-I risk of bias assessment
  • Random-effects meta-analysis
  • ROBINS-I risk of bias assessment

Pooled result

Major congenital malformations overall

Relative risk

1.04

95% CI 0.98–1.11

Any opioid vs Unexposed
RR 1.04 (95% CI 0.98–1.11)

As reported in the abstract

Further pooled results

OutcomeRR (95% CI)
Cardiovascular malformations1.07 (0.96–1.20)
Central nervous system malformations1.06 (0.92–1.21)
Gastrointestinal malformations1.40 (0.38–5.16)
Cleft palate1.57 (0.48–5.13)
Atrial septal defects (codeine exposure)Codeine vs Unexposed1.20 (1.05–1.36)

Original publication

Opioid analgesic exposure during the first trimester of pregnancy and the risk of major congenital malformations in infants: a systematic review and meta‐analysis †. Anaesthesia. Published 7 May 2024. doi:10.1111/anae.16307

Composed by AI from the published abstract and checked against it. How Briefs are made →

Get them every week

New studies on this topic in My Week and in your Monday e-mail.

We e-mail you a sign-in link and a code. No password, no spam.