February 16, 2010

Repeating Weight-Loss Surgery Procedure Has Added Risks

Repeat weight-loss surgery carries a higher risk of complications than the initial surgical procedure, new research has found.

The surgical treatment, known as bariatric surgery, is the only effective method for long-term weight loss in severely obese people. Rates of repeat bariatric surgery are reported to range from 5 percent to 56 percent, according to background information in the new study.

In their report, Greek researchers looked at 56 patients who had repeat bariatric surgery between 1995 and 2008. The patients had an average age of 39.6, and an average body mass index (BMI) of 46.9. (BMI is a measurement that takes into account weight and height, and those with a BMI over 30 are considered obese.)

The three main reasons for the “revisional” bariatric surgery were: unsatisfactory weight loss after the initial procedure; severe nutritional complications such as protein malnutrition; and intolerable side effects such as blocking or narrowing of the digestive tract.

The patients were followed-up for an average of 102 months after their revisional surgery. None of them died, but 19 (33.9 percent) had serious complications within one to three months after surgery, including internal leakage from the surgical site, acute kidney failure and pneumonia.