American Board of Surgery Qualifying Exam (ABS QE) Practice Test

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What is the anticipated weight loss percentage following laparoscopic Roux-en-Y gastric bypass?

40-50%
51-60%
61%
70%

The correct answer is: 61%

Following laparoscopic Roux-en-Y gastric bypass, the anticipated weight loss percentage typically ranges between 60-70% of excess body weight. The procedure is designed to create a small gastric pouch and reroute the small intestine, which helps patients to feel fuller faster and reduces calorie absorption. The most common understanding suggests that patients can expect to lose around 60% of their excess weight within 12-18 months post-surgery. The percentage chosen, suggesting 61%, aligns closely with this general expectation, as it falls well within the range of what is frequently referred to as the average weight loss after this form of bariatric surgery. Successful outcomes may vary based on individual factors such as initial weight, adherence to dietary guidelines, and exercise post-surgery, but the prediction of around 60% weight loss offers a realistic benchmark for patients and healthcare providers alike.