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Birth defects in relation to Bendectin use in pregnancy. II. Pyloric stenosis
Insights
This study found no increased risk of pyloric stenosis in infants exposed to Bendectin during pregnancy. Large-scale case-control analysis confirms Bendectin safety for pregnancy outcomes.
Area of Science:
- Obstetrics and Gynecology
- Pediatric Surgery
- Clinical Pharmacology
Background:
- Pyloric stenosis is a congenital condition affecting infants.
- Bendectin, an antiemetic medication, has been previously investigated for potential teratogenic effects.
- Concerns regarding Bendectin's association with pyloric stenosis necessitate further investigation.
Purpose of the Study:
- To evaluate the hypothesis that antenatal exposure to Bendectin increases the risk of pyloric stenosis in infants.
- To provide robust data on the safety of Bendectin use during pregnancy.
Main Methods:
- A large case-control study design was employed.
- Cases comprised 325 infants diagnosed with pyloric stenosis.
- Two control groups were utilized: 3,153 infants with other conditions and 724 infants with conditions potentially originating anytime during pregnancy.
Main Results:
- The estimated relative risk of pyloric stenosis associated with antenatal Bendectin exposure was 0.9 (95% CI, 0.6-1.2) when compared to the broader control group.
- The estimated relative risk was 1.0 (95% CI, 0.7-1.4) when compared to the subset control group.
- These findings indicate no statistically significant increased risk.
Conclusions:
- The results from this extensive case-control study suggest that Bendectin does not elevate the risk of pyloric stenosis.
- Bendectin can be considered safe regarding pyloric stenosis risk in pregnancy.
- Further research may explore other potential pregnancy outcomes if necessary.
Abstract:
To test the hypothesis that the use of Bendectin in pregnancy increases the risk of pyloric stenosis, we determined rates of antenatal Bendectin exposure among 325 infants with pyloric stenosis and among two control groups comprising infants with other defects; one consisted of 3,153 infants with other conditions, and the other, a subset of that group, consisted of 724 infants with defects that may have had their origins at any time in pregnancy. Comparisons between the cases and the two control series yielded estimated relative risks of 0.9 (95% confidence interval, 0.6 to 1.2) and 1.0 (0.7 to 1.4), respectively. The findings from this large case-control study suggest that Bendectin does not increase the risk of pyloric stenosis.