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Infantile hypertrophic pyloric stenosis: a study of feeding practices and other possible causes
1Department of Community Health and Epidemiology, University of Saskatchewan, Saskatoon.
Insights
Bottle-feeding was significantly more common in infants with infantile hypertrophic pyloric stenosis (IHPS). This finding suggests a potential link between bottle-feeding and IHPS, possibly explaining recent incidence declines.
Area of Science:
- Pediatrics
- Neonatology
- Gastroenterology
Background:
- Infantile hypertrophic pyloric stenosis (IHPS) is a congenital condition affecting newborns.
- Understanding risk factors for IHPS is crucial for early detection and prevention strategies.
Purpose of the Study:
- To investigate the association between infant feeding practices at discharge and the development of infantile hypertrophic pyloric stenosis (IHPS).
Main Methods:
- A case-control study was conducted using hospital charts of 91 infants diagnosed with IHPS.
- Infants were matched with controls based on gestational age, excluding those with confounding feeding factors.
- Feeding practices, specifically bottle-feeding prevalence, were compared between IHPS cases and controls.
Main Results:
- Infants with IHPS showed a 2.9 times higher prevalence of bottle-feeding compared to control infants.
- The male:female ratio in the IHPS group was 5.5, with an odds ratio for male predominance of 4.
- Mean birth weights were similar between the IHPS group (3501 g) and controls (3543 g).
Conclusions:
- Bottle-feeding emerges as a potentially significant risk factor for infantile hypertrophic pyloric stenosis (IHPS).
- The observed decline in IHPS incidence may correlate with decreased bottle-feeding rates.
- Further research is warranted to confirm the causal relationship between bottle-feeding and IHPS.
Abstract:
We carried out a case-control study of the hospital charts of 91 infants with infantile hypertrophic pyloric stenosis (IHPS) to determine the feeding practices at the time of discharge from the neonatal nursery. We excluded infants whose feeding might have been influenced by confounding factors. The infants were matched with controls for gestational age. The mean birth weight of the IHPS group was 3501 g and of the control group 3543 g. The male:female ratio for the IHPS group was 5.5. The odds ratio of male predominance was 4. We found that bottle-feeding was 2.9 times more prevalent among the infants with IHPS than among the control subjects. We speculate that the recently observed decrease in the incidence of IHPS is due to the decline in bottle-feeding.