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Effect of Roux Limb Length on Weight Loss After Roux-en-Y Gastric Bypass

Longer Alimentary Limb-lengths Associated with Higher Rate of Weight Loss After Roux-en-Y Stomach Bypass

Bariatric Surgery - Bariatric Research Studies

The Effect of Roux Limb Lengths on Weight Loss After Roux-en-Y Gastric Bypass

The effect of limb-length on weight reduction after Roux-en-Y gastric bypass (RYGBP) is controversial; hence, the optimal limb-lengths have not been determined. This study evaluated the effect of different limb-lengths on weight loss after Roux-en-Y gastric bypass.

Method

The study was a prospective randomized clinical trial in which patients undergoing Roux-en-Y gastric bypass (110 F, 24 M; mean age 39.7) were randomized as follows: BMI < or = 50 (N = 69): A-75 cm (N = 35) vs B-150 cm alimentary limb (N = 34) and C-150 cm (N = 33) vs D-250 cm alimentary limb (N = 31). All other aspects of the operation were identical. Patients were followed at 2 weeks, 6 weeks, 6 months, 12 months, 18 months, 24 months and yearly thereafter.

Results

There were no significant differences in age, sex, race, initial BMI, or excess weight between patients assigned to groups A vs B and C vs D. Postoperative nutritional intake was also similar between groups. Within each weight category, there were no differences in mean weight loss, change in BMI, and % excess weight lost (EWL) over time. When the number of patients achieving 50% excess weight lost was evaluated, there was no difference between groups with a BMI < or = 50 kg/m2; however, among patients with a BMI > 50 kg/m2, a significantly greater percentage of those having a 250-cm limb achieved more than 50% excess weight lost at 18 months postoperatively. This difference was lost at 24 and 36 months, possibly due to the small sample size.

Conclusion

In patients with a BMI < or = 50, there appears to be no advantage to longer roux limb-length. In patients with BMI > 50, however, these data suggest that longer alimentary limb-lengths may be associated with a higher percent of patients achieving more than 50% excess weight lost. Longer follow-up studies of the effects of limb-length on success of RYGBP are indicated.

Source:
Choban PS, Flancbaum L. Bariatric Treatment Center of Ohio, Ohio State University, Columbus, OH, USA. 2002

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Laparoscopic or open bariatric surgery, such as gastric banding or bypass is not an easy solution to morbid obesity and weight loss. It is a serious surgical procedure, involving health risks. To produce lasting weight loss it requires a long-term patient commitment to eating a healthy diet and following a regular program of physical exercise. Life-long use of nutritional supplements may also be necessary. So, before deciding, discuss your options fully with your doctor. © 2003-2017 Bariatric-Surgery.Info - Terms - Contact - Information - Resources