This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Robotics, Laparoscopy and Bariatric Surgery, Subject name: Surgery
All of the following are true about Bariatric surgery except: 
Select and explain. 
A. Indication for Bariatric surgery is patients that have a BMI of 35 Kg/m2 or more with comorbidity, B. Most commonly performed procedure now-a-days is Roux-en-Y gastric bypass, C. Laparoscopic adjustable gastric banding (safest & reversible), D. Most common cause of death within 30 days of bariatric surgery is peritonitis secondary to anastomotic leak
D: Most common cause of death within 30 days of bariatric surgery is peritonitis secondary to anastomotic leak
Answer: D: Most common cause of death within 30 days of bariatric surgery is peritonitis secondary to anastomotic leak 
Explanation: BARIATRIC SURGERY: Types of Bariatric Surgeries: Bariatric operation Mechanism of action - Veical banded gastroplasty - Laparoscopic adjustable gastric banding (Safest & reversible) - Restrictive - Roux-en-Y gastric bypass (RYGB): MC performed procedure now-a-days - Largely Restrictive/mildly Malabsorptive Bilopancreatic diversion(Maximum weight loss) Duodenal switch Largely Malabsorptive/Mildly Restrictive PERIOPERATIVE MOALITY IN BARIATRIC SURGERY: - MC cause of death within 30 days of Bariatric surgery: Pulmonary embolism (36%) > cardiac complications (24%) > Anastomotic leaks (20%) - MC cause of death in Immediate postoperative period: Peritonitis secondary to Anastomotic leak (Leak most commonly occurs at the Gastrojejunostomy because the acid in the stomach causes ulcers at the site of anastomosis )