Clinical outcome of decompressing colostomy for acute left-sided colorectal obstruction: a consecutive series of 100 patients.

Purpose: Aim of our study was to evaluate the outcomes of a consecutive series of patients who were treated with a decompressing colostomy (DC) for acute left-sided colorectal obstruction.

Method: A consecutive series of 100 patients with acute left-sided colorectal obstruction who underwent DC from January 2015 to August 2020 was retrospectively analyzed. Demographic characteristics, etiology of the obstruction, postoperative morbidity- and mortality rates, DC-related complication and stoma reversal rates were evaluated.

Results: Of the 100 included patients, 64 had malignant- and 36 had benign obstruction. The mean age was 69 years, 42% was male, and the ASA score was 2. Morbidity and mortality rates after DC construction were 20 and 2%, respectively. In 39% of the patients, DC ended up as a permanent stoma and in 61% as bridge to surgery (BtS). DC related complication rate was 32%, with a re-intervention rate of 9%. Elective colorectal resection was performed in 59 cases (59%) with subsequent postoperative morbidity rate of 20%. Stoma reversal rate was 77% for the patients who underwent DC as BtS. Stoma reversal was performed in 66% of the patients with benign obstruction and in 36% for oncological obstruction.

Conclusion: DC as bridge to possible elective resection for acute left-sided colorectal obstruction is an effective strategy with low morbidity and mortality rates and a high stoma reversal rate, especially for benign obstruction. However, DC is less appropriate for patients in whom DC turns out to be a permanent stoma due to a relatively high stoma related complications.