Defining the safety of early ileostomy closure after ileal pouch anal anastomosis.

Abstract

The safety of early ileostomy reversal after ileal pouch anal anastomosis (IPAA) has not been established. Our hypothesis was that ileostomy reversal before 8weeks is associated with negative outcomes. This was a retrospective cohort study from a prospectively maintained institutional database. Patients who underwent primary IPAA with ileostomy reversal between 2000 and 2021 from a Pouch Registry were stratified on the basis of timing of reversal. Those reversed before 8weeks (early) and those reversed from 8weeks to 116days (routine) were compared. The primary outcome was overall complications according to timing and reason for closure. Ileostomy reversal was performed early in 92 patients and routinely in 1908. Median time to closure was 49days in the early group and 93days in the routine group. Reasons for early reversal were stoma-related morbidity in 43.3% (n = 39) and scheduled closure in 56.7% (n = 51). The complication rate in the early group was 17.4% versus 11% in the routine group (p = 0.085). When early patients were stratified according to reason for reversal, those reversed early for stoma-related morbidity had an increased complication rate compared to the routine group (25.6% vs. 11%, p = 0.006). Patients undergoing scheduled reversal in the early group did not have increased complications (11.8% vs. 11%, p = 0.9). There was a higher likelihood of pouch anastomotic leak when reversal was performed early for stoma complications compared to routinely (OR 5.13, 95%CI 1.01-16.57, p = 0.049). Early closure is safe but could be delayed in stoma morbidity as patients may experience increased complications.