• T T Søvik, O Taha, E T Aasheim, M Engström, J Kristinsson, S Björkman, C F Schou, H Lönroth, T Mala, and T Olbers.
• Departments of Gastrointestinal Surgery, Oslo University Hospital Aker, Oslo, Norway. t.t.sovik@medisin.uio.no
• Br J Surg. 2010 Feb 1; 97 (2): 160-6.

BackgroundLaparoscopic Roux-en-Y gastric bypass (LRYGB) and laparoscopic biliopancreatic diversion with duodenal switch (LDS) are surgical options for superobesity. A randomized trial was conducted to evaluate perioperative (30-day) safety and 1-year results.MethodsSixty patients with a body mass index (BMI) of 50-60 kg/m(2) were randomized to LRYGB or LDS. BMI, percentage of excess BMI lost, complications and readmissions were compared between groups.ResultsPatient characteristics were similar in the two groups. Mean operating time was 91 min for LRYGB and 206 min for LDS (P < 0.001). One LDS was converted to open surgery. Early complications occurred in four patients undergoing LRYGB and seven having LDS (P = 0.327), with no deaths. Median stay was 2 days after LRYGB and 4 days after LDS (P < 0.001). Four and nine patients respectively had late complications (P = 0.121). Mean BMI at 1 year decreased from 54.8 to 38.5 kg/m(2) after LRYGB and from 55.2 to 32.5 kg/m(2) after LDS; percentage of excess BMI lost was greater after LDS (74.8 versus 54.4 per cent; P < 0.001).ConclusionLRYGB and LDS can be performed with comparable perioperative safety in superobese patients. LDS provides greater weight loss in the first year.Copyright (c) 2009 British Journal of Surgery Society Ltd. Published by John Wiley & Sons, Ltd.

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