Usefulness of Abdominal Drain in Laparoscopic Roux-en-Y Gastric Bypass: A Randomized Controlled Trial.

Laparoscopic Roux-en-Y gastric bypass (RYGB) is one of the most common procedures to treat morbid obesity. Abdominal drains are often placed during the operation to detect complications earlier. The aim of this study was to assess the benefit of routine drain placement during laparoscopic RYGB. A consecutive series of patients undergoing laparoscopic RYGB between 2017 and 2018 was analyzed. The sample was randomized before the procedure into two groups: with abdominal drain (G1) and without abdominal drain placement (G2). Patients with intraoperative complications were excluded from the randomization. Postoperative complications and pain (visual analogue scale) were compared between groups. A total of 84 patients were included; 45 belonged to G1 and 39 to G2. Mean age (G1 44 years versus G2 48 years) and body mass index (G1 43 kg/m versus G2 44 kg/m) were similar in both groups. There were no significant differences between groups in preoperative comorbidities. Mean operative time was 92 minutes in both groups. Mean pain score at postoperative day 0 was similar in both groups (G1 3.2 versus G2 3.5,  = .58), but was higher in G1 at postoperative day 1 (G1 3.1, G2 1.1,  = .02). Postoperative Clavien-Dindo I-II complications were similar in both groups (G1 9% versus G2 1%,  = .37). No major complications, reoperations, or 30-day mortality occurred in the entire cohort. Drain placement in laparoscopic RYGB was associated with greater postoperative pain and did not show benefits in early detection of postoperative complications. Routine placement of abdominal drain in laparoscopic RYGB might not be recommended.