Long-term results of gastric bypass in patients followed for longer than 10 years is not reported in the literature.
Dr Nicolas Christou and colleagues completed a long-term follow-up of patients undergoing isolated roux-en-Y gastric bypass for severe obesity.
Accurate weights were recorded in 84% of patients at a mean of 11 years after surgery.
Results were documented on an individual basis for both long- and short-limb gastric bypass.
|Long-term mortality remains low at 3%|
|Annals of Surgery|
The team compared these results with the nadir body mass index and percentage excess weight loss at 5 years, and more than 10 years post surgery.
The research team found an increase in body mass index in both obese, and morbidly obese patients from the nadir to 5 years and from 5 to 10 years.
The morbidly obese lost more rapidly from time zero and gained more rapidly after reaching the lowest weight at 2 years than obese patients.
The team observed no difference in results between the long- and short-limb operations.
There was an increase in failures and decrease in excellent results at 10 years when compared with 5 years.
The team noted that the failure rate when all patients were followed for at least 10 years was 20% for morbidly obese patients, and 35% for obese patients.
Dr Christou's team concludes, “The gastric bypass limb length does not impact long-term weight loss.”
“Significant weight gain occurs continuously in patients after reaching the nadir weight following gastric bypass.”
“Despite this weight gain, the long-term mortality remains low at 3%.”