Characteristics and clinical outcomes of pediatric patients following massive bowel resection: A retrospective cohort study

Background: Massive bowel resection (MBR), defined as residual small bowel < 25 % of expected length-for-age based on established norms, is a rare entity. Traditionally, children who have undergone MBR have higher mortality and less probability of achieving enteral autonomy compared to patients with less substantial bowel loss. The primary objective of this study was to determine the characteristics and clinical outcomes of pediatric patients following MBR. Secondary objectives included comparing patients who achieved enteral autonomy to those who remained parenteral nutrition (PN)-dependent to determine characteristics associated with PN independence. Methods: Retrospective cohort study of patients following MBR managed by our multidisciplinary intestinal rehabilitation program between January 1, 2006 and December 31, 2017, with an observation period ending December 31, 2021. Results: 61 patients with MBR fulfilled study inclusion criteria. 21 patients (34.4 %) achieved enteral autonomy while 40 patients (65.6 %) did not. Patients who achieved enteral autonomy had a greater percentage of residual small bowel (22 % vs 13 %, P < 0.01) and colon (100 % vs 50 %, P < 0.01). They were more likely to have an ICV (73.2 % vs 15 %, P < 0.01) and less likely to undergo STEP procedure (14.3 % vs 37.5 %, P = 0.02). 18 patients in the cohort without enteral autonomy achieved greater than 50 % enteral nutrition. In this cohort, the overall transplant rate was 9.8 % and mortality rate was 1