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Descriptive epidemiology of small-bowel atresia in metropolitan Atlanta
Insights
Small-bowel atresia affects 2.7/10,000 livebirths, with higher rates in Black females and during winter months. No familial links or drug exposures were identified in this study.
Area of Science:
- Pediatric Surgery
- Medical Genetics
- Epidemiology
Background:
- Small-bowel atresia is a congenital malformation requiring surgical intervention.
- Understanding its epidemiological characteristics is crucial for public health initiatives.
- Previous studies have suggested associations with chromosomal abnormalities and environmental factors.
Purpose of the Study:
- To describe the epidemiological features of small-bowel atresia in a defined population.
- To investigate potential risk factors including familial aggregation, prenatal exposures, and demographic associations.
- To analyze the characteristics of isolated small-bowel atresia.
Main Methods:
- Active, population-based birth defect surveillance in Atlanta, Georgia over a 6-year period.
- Ascertainment of 46 children diagnosed with small-bowel atresia.
- Detailed analysis of 32 cases of isolated small-bowel atresia.
Main Results:
- The overall incidence of small-bowel atresia was 2.7 per 10,000 livebirths.
- The association between duodenal atresia and Down syndrome was confirmed.
- Isolated small-bowel atresia was more frequent in Black infants, particularly females, and occurred more often in winter births. No familial cases or significant prenatal drug exposures were found.
Conclusions:
- Small-bowel atresia exhibits specific demographic and seasonal patterns.
- The findings highlight potential disparities in occurrence based on race and sex.
- Further research is needed to elucidate the etiology of isolated small-bowel atresia.
Abstract:
The epidemiological characteristics are presented of 46 children with small-bowel atresia, ascertained over a 6-year period by an active, population-based birth defect surveillance program in Atlanta, Georgia. The malformation occurred at a rate of 2.7/10,000 livebirths. The previously reported association of duodenal atresia and Down syndrome was confirmed was confirmed. No instances of familial association were noted, nor was any excessive prenatal exposure to drugs found. Thirty-two instances of isolated small-bowel atresia were analyzed in detail. The frequency of the isolated defect for blacks was twice that for whites because of a higher rate for black females. The isolated defect was commonest in the winter months. The relation between isolated small-bowel atresia, birth weight, and mortality was discussed. This small series cannot readily be subdivided into distinct epidemiological groups on the basis of the location of the atretic lesions along the length of the small bowel.