Banded gastric bypass - four years follow up in a prospective multicenter analysis

Background: The gastric bypass is the gold standard of bariatric surgery. Nevertheless some patients show insufficient weight loss or weight regain. Dilation of the pouch or the pouch outlet may be the cause. The banded gastric bypass tries to overcome dilation by placing an implant around the pouch or pouch outlet. In this study we describe our results using the GaBP (TM) ring system in banded gastric bypass operations in 3 bariatric centers. Methods: 183 patients in 3 bariatric reference centers received a banded gastric bypass operation using the GaBP T ring system. Up to 4 years follow up was evaluated including weight loss and complications. Results: Mean EWL after 6 Months was 60% with a mean BMI of 30.1 kg/m(2). After one year mean EWL reached 75.3% with a mean BMI of 27 kg/m(2) (110 patients). After two and three years the EWL was 78.8% (n = 49) and 79.9% (n = 35). There was a mean EWL of 85% after 4 years. Thirteen patients finished a 4 year follow up period and mean BMI after 4 years was 25.2 kg/m(2). In the perioperative and early postoperative period there was a low complication rate (4.3%). Stenosis or dysphagia was observed in only one patient. There was only one ring related complication. Conclusion: Banded gastric bypass using the GaBP T ring system allows good weight loss with no regain of weight in a four year follow up. The complication rate is low. A randomized controlled trial is currently underway to compare banded and conventional gastric bypass.