Risk factors for Hirschsprung-associated enterocolitis following Soave: a retrospective study over a decade

Background: Hirschsprung-associated enterocolitis (HAEC), one of the most significant causes of morbidity and mortality for patients with Hirschsprung disease (HSCR), can occur before and after radical surgery. This study aims to identify the risk factors for HAEC before and after Soave. Methods: : A retrospective study of 145 patients with HSCR treated between January 2011 and June 2021 was performed. Data were retrieved from the medical records. HAEC was defined as the presence of clinical signs of bowel inflammation and requiring treatment with intravenous antibiotics and rectal irrigation for at least two days in the outpatient or inpatient department. Univariate analysis and multivariate regression models were used to identify risk factors for developing pre-and postoperative HAEC. Results: : The incidence of pre-and postoperative HAEC was 24.1% and 20.7%, respectively. More than 90% of the patients with the first episode of postoperative HAEC occurred within the first year after Soave. Long-segment aganglionosis was the independent risk factor for developing preoperative HAEC ([OR] 5.8, Cl 2.4-14.2, p＜0.001), while the history of preoperative HAEC was significantly associated with developing postoperative HAEC ([OR] 4.2, Cl 1.6-10.8, p=0.003). Conclusions: : Long-segment aganglionosis was the independent risk factor for the development of preoperative HAEC, while the history of preoperative HAEC was strongly associated with developing HAEC after Soave. Type of study: a retrospective observational study Level of Evidence: Level Ⅲ