Related Experiment Videos
Is metronidazole teratogenic? A meta-analysis
T Caro-Patón1, A Carvajal, I Martin de Diego
1Instituto de Farmacoepidemiología, Universidad de Valladolid, Spain.
British Journal of Clinical Pharmacology
|August 1, 1997
Summary
This meta-analysis found no link between metronidazole use in early pregnancy and birth defects. The study indicates metronidazole is safe for pregnant women regarding congenital malformations.
Area of Science:
- Obstetrics and Gynecology
- Pharmacology
- Teratology
Background:
- Metronidazole is a commonly prescribed antibiotic during pregnancy.
- Concerns exist regarding potential teratogenic effects of metronidazole.
- Evidence on the association between metronidazole and congenital malformations is inconclusive.
Purpose of the Study:
- To evaluate the risk of congenital malformations associated with metronidazole use during pregnancy.
- To synthesize existing epidemiological data through a meta-analysis.
Main Methods:
- Systematic review and meta-analysis of epidemiological studies (cohort and case-control).
- Inclusion of studies assessing congenital malformation risk after first-trimester metronidazole exposure.
- Application of the Mantel-Haenszel method to calculate summary odds ratio.
- Heterogeneity testing to assess study consistency.
Main Results:
- Five studies (1 unpublished case-control, 4 published cohort) met inclusion criteria.
- Studies were not statistically heterogeneous.
- Summary odds ratio for metronidazole exposure in the first trimester was 1.08 (95% CI: 0.90-1.29).
- Heterogeneity test: chi2 = 4.72, P = 0.32.
Conclusions:
- This meta-analysis did not identify a relationship between first-trimester metronidazole exposure and birth defects.
- The findings suggest that metronidazole use during early pregnancy is not associated with an increased risk of congenital malformations.