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  • Title: Effects of Hospital Volume on Patient Outcomes and Costs in Infants With Pyloric Stenosis.
    Author: Tom CM, Niino C, Lee AD, Friedlander S, Sakai-Bizmark R, Lee SL.
    Journal: J Surg Res; 2019 Jan; 233():65-73. PubMed ID: 30502289.
    Abstract:
    BACKGROUND: There is a well-established relationship between surgical volume and outcomes after complex pediatric operations. However, this relationship remains unclear for common pediatric procedures. The aim of our study was to investigate the effect of hospital volume on outcomes after hypertrophic pyloric stenosis (HPS). METHODS: The Kid's Inpatient Database (2003-2012) was queried for patients with congenital HPS, who underwent pyloromyotomy. Hospitals were stratified based on case volume. Low-volume hospitals performed the lowest quartile of pyloromyotomies per year and high-volume hospitals managed the highest quartile. Outcomes included complications, mortality, length of stay (LOS), and cost. RESULTS: Overall, 2137 hospitals performed 51,792 pyloromyotomies. The majority were low-volume hospitals (n = 1806). High-volume hospitals comprised mostly children's hospitals (68%) and teaching hospitals (96.1%). The overall mortality rate was 0.1% and median LOS was 2 d. High-volume hospitals had lower overall complications (1.8% versus 2.5%, P < 0.01) and fewer patients with prolonged LOS (17.0% versus 23.5%, P < 0.01) but had similar rates of individual complications, similar mortality, and equivalent median LOS as low-volume hospitals. High-volume hospitals also had higher costs by $1132 per patient ($5494 versus $4362, P < 0.01). Regional variations in outcomes and costs exist with higher complication rates in the West and lower costs in the South. There was no association between mortality or LOS with hospital volume or region. CONCLUSIONS: Patients with pyloric stenosis treated at high-volume hospitals had no clinically significant difference in outcomes despite having higher costs. Although high-volume hospitals offer improved outcomes after complex pediatric surgeries, they may not provide a significant advantage over low-volume hospitals in managing common pediatric procedures, such as pyloromyotomy for congenital HPS.
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