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Obes Surg. 1997 Apr;7(2):142-7; discussion 148.

Weight loss following transected gastric bypass with proximal Roux-en-Y.

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Auburn Memorial Hospital, NY 13021-2633, USA.



Cross-sectional analysis was performed to study the trend in weight loss following surgery.


Among 194 patients involved in the study during the period 1990-1995, 86.6% were female and 87.1% were white. Median values for the initial cohort of 194 patients were as follows: age 32.5 years; height 163.8cm; preoperative weight 122.81 kg. Of these patients 67%, 30%, and 3% of the patients were categorized as morbidly obese, super obese, and obese respectively. They all underwent gastric bypass surgery.


Follow-up rates were 67.9% at 1 year, 55.8% at 2 years, 62.8% at 3 years, and 70.0% at 4 years postoperation. Median BMI was reduced from 45.18 to 28.40, and median percentage loss of excess weight was 68.5% after 1 year. After 2, 3, and 4 years, median BMI values were 27.69, 28.63, and 29.40, and median percentages of excess weight loss were 71.18%, 69.28%, and 57.49%, respectively. Although the analysis at 4 years indicates that some patients experience slight weight gain, the increase was not significant and further analysis will be performed when more data points are available.


Postoperative weight loss has been satisfactory.

[Indexed for MEDLINE]

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