Behavioural interventions appear to improve weight loss at 12 months after bariatric surgery .
Background Significant , sustained weight loss through conventional , non-surgical interventions is often unattainable for people with severe obesity ( e.g. BMI ≥40 or ≥35 kg/m2 with co-morbidities ) .
Bariatric surgery is effective in treating severe obesity , but surgery alone without additional behaviour change management may not result in optimum long-term weight loss and maintenance .
This systematic review and meta- analysis of r and omised controlled trials evaluated the effectiveness of lifestyle interventions before and /or after bariatric surgery .
Is there a benefit to preoperative weight loss in gastric bypass patients? A prospective randomized trial.
BACKGROUND Roux-en-Y gastric bypass surgery is the leading surgical treatment of morbid obesity in the United States . The role of preoperative weight loss in gastric bypass surgery remains controversial . We performed a prospect i ve r and omized trial to determine whether preoperative weight loss results in better outcomes after laparoscopic gastric bypass . METHODS A total of 100 patients undergoing laparoscopic gastric bypass surgery from May 2004 to October 2005 were r and omized preoperatively to either a weight loss group with a 10 % weight loss requirement or a group that had no weight loss requirements . The patients were followed prospect ively . The variables analyzed included perioperative complications , operative time , postoperative weight loss , and resolution of co-morbidities . RESULTS Data were available for 26 patients in the weight loss group and 35 in the nonweight loss group . The 2 groups had similar preoperative characteristics , conversion and complication rates , and resolution of co-morbidities . The initial body mass index was 48.7 kg/m(2 ) and 49.3 kg/m(2 ) for the weight loss group and nonweight loss group , respectively ( P = NS ) . The preoperative body mass index was 44.5 kg/m(2 ) and 50.7 kg/m(2 ) for the weight loss group and nonweight loss group , respectively ( P = 0.0027 ) . The operative time was 220.2 and 257.6 minutes for the 2 groups ( P = 0.0084 ) . The percentage of excess weight loss at 3 and 6 months for the weight loss group and nonweight loss group was 44.1 % and 33.1 % ( P = 0.0267 ) and 53.9 % and 50.9 % ( P = NS ) , respectively . The interval to surgery from the initial consultation was 5.4 months and 5.2 months for the 2 groups ( P = NS ) . CONCLUSIONS Preoperative weight loss before laparoscopic Roux-en-Y gastric bypass was associated with a decrease in the operating room time and an improved percentage of excess weight loss in the short term . Preoperative weight loss , however , did not affect the major complication or conversion rates , and its long-term effects were not apparent through this study . Also , preoperative weight loss did not have any bearing on the resolution of co-morbidities
Behavioural interventions appear to improve weight loss at 12 months after bariatric surgery .
Background Significant , sustained weight loss through conventional , non-surgical interventions is often unattainable for people with severe obesity ( e.g. BMI ≥40 or ≥35 kg/m2 with co-morbidities ) .
Bariatric surgery is effective in treating severe obesity , but surgery alone without additional behaviour change management may not result in optimum long-term weight loss and maintenance .
This systematic review and meta- analysis of r and omised controlled trials evaluated the effectiveness of lifestyle interventions before and /or after bariatric surgery .