Postoperative apnea after pyloromyotomy for infantile hypertrophic pyloric stenosis.

Objective: Infantile hypertrophic pyloric stenosis (IHPS), which causes gastric outlet obstruction and hypochloremic hypokalemic metabolic alkalosis, could pose a risk of postoperative apnea in patients. The aim of this study is to evaluate the incidence of postoperative apnea in babies admitted to a tertiary-level pediatric surgical center in Milano, Italy with diagnosis of IHPS in 2010-2019. The secondary objective is to evaluate the risk factors for postoperative apnea.