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Published on: July 8, 2025
Hospital type predicts surgical complications for infants with hypertrophic pyloric stenosis
Lorraine I Kelley-Quon1, Chi-Hong Tseng, Howard C Jen
1Division of Pediatric Surgery, Department of Surgery, Mattel Children's Hospital, David Geffen School of Medicine at UCLA, Los Angeles, California 90095-7098, USA.
Insights
Infants undergoing pyloromyotomy for hypertrophic pyloric stenosis had higher complication rates at community hospitals compared to children's hospitals. Hospital type, not case volume, influenced surgical outcomes.
Area of Science:
- Pediatric Surgery
- Healthcare Quality Improvement
Background:
- Hypertrophic pyloric stenosis is a common condition requiring pyloromyotomy in infants.
- Understanding hospital-level factors influencing surgical outcomes is crucial for improving patient care.
Purpose of the Study:
- To investigate the impact of hospital type and case volume on clinical outcomes for infants undergoing pyloromyotomy.
- To identify factors associated with surgical complications, prolonged length of stay, and readmission.
Main Methods:
- Retrospective review of 8379 infants undergoing pyloromyotomy from 1999-2007 using California linked birth cohort data.
- Analysis of hospital type (community, children's, adult with children's unit) and case volume.
- Multivariate logistic regression to assess surgical complications, prolonged length of stay (LOS), and 30-day readmission.
Main Results:
- Infants treated at community hospitals had increased odds of surgical complications (OR, 2.1) and prolonged LOS (OR, 1.7).
- Surgical complication rates did not significantly vary by hospital case volume.
- Hospital type and volume did not impact 30-day readmission rates.
Conclusions:
- Specialized surgical care at pediatric centers may lead to better outcomes for pyloromyotomy compared to community hospitals.
- Further research is needed to understand the specific institutional factors contributing to improved outcomes in specialty centers.
Abstract:
Pyloromyotomy is a common surgery performed for hypertrophic pyloric stenosis at community and children's hospitals. To determine hospital-level factors that may affect clinical outcomes, infants requiring pyloromyotomy from 1999 to 2007 (n=8379) were retrospectively reviewed from the California linked birth cohort data set. Hospital case volume and type (community, children's, adult hospital with children's unit) were examined. Surgical complications, prolonged length of stay (LOS), and 30-day readmission were analyzed with multivariate logistic regression. Overall, surgical complications occurred in 166 (2%) infants, 35 (21%) after discharge. Readmission occurred in 285 (3.4%) infants with 69 (24%) admitted to hospitals that did not perform the initial surgery. Infants treated at community hospitals (odds ratio [OR], 2.1; 95% confidence interval [CI], 1.1 to 4.0) experienced an increased likelihood of surgical complications. Odds of surgical complications did not vary by hospital case volume. Prolonged LOS was increased at community hospitals (OR, 1.7; 95% CI, 1.2 to 2.3), low- (OR, 2.1; 95% CI, 1.3 to 3.4), and medium-volume (OR, 1.6; 95% CI, 1.0 to 2.7) hospitals. Hospital type and volume did not impact 30-day readmission. In conclusion, specialized surgical care for infants administered at pediatric centers appears to influence pyloromyotomy complications more than hospital case volume. Institutional components contributing to improved outcomes in specialty centers warrant further investigation.
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