Implementing a no-drain policy for extraperitoneal colorectal anastomosis in a real-life setting: analysis of outcomes and surgeons' adherence.

Aim: Recent evidence has questioned the usefulness of anastomotic drain (AD) after low anterior resection (LAR). However, the implementation and adoption of a no-drain policy are still poor. This study aims to assess the clinical outcomes of the implementation of a no-drain policy for rectal cancer surgery into a real-life setting and the adherence of the surgeons to such policy.

Method: A retrospective analysis was conducted on patients who underwent elective minimally invasive LAR between January 2015 and December 2019 at two tertiary referral centers. In 2017, both centers implemented a policy aimed at reducing the use of AD. Patients were retrospectively categorized into two groups: the drain policy (DP) group, comprising patients treated before 2017, and the no-drain policy (NDP) group, consisting of patients treated from 2017 onwards. The endpoints were the rate of anastomotic leak (AL) and of related interventions.

Results: Among the 272 patients included, 188 (69.1%) were in the NDP group, and 84 (30.9%) were in the DP group. Baseline characteristics were similar between the two groups. AL rate was 11.2% in the NDP group compared to 10.7% in the DP group (p = 1.000), and the AL grade distribution (grade A, 19.1% (4/21) vs 28.6% (2/9); grade B, 28.6% (6/21) vs 11.1% (1/9); grade C, 52.4% (11/21) vs 66.7% (6/9), p = 0.759) did not significantly differ between the groups. All patients with symptomatic AL and AD underwent surgical treatment for the leak, while those with symptomatic AL in the NPD group were managed with surgery (66.7%), endoscopic (19.0%), or percutaneous (14.3%) interventions. Postoperative outcomes were similar between the groups. Three years after implementing the no-drain policy, AD was utilized in only 16.5% of cases, compared to 76.2% at the study's outset.

Conclusion: The introduction of a no-drain policy received a good adoption rate and did not affect negatively the surgical outcomes.