Gastric sleeve and BPD/DS are done laparoscopically as opposed to open approaches. Both procedures are efficacious in inducing weight loss and improvement in obesity-related conditions. The success of patients losing weight with the less invasive gastric sleeve has caused a gradual decline in the number of DS surgeries.
The duodenal switch is considered the most effective, and most complex weight loss surgery. However, the gastric sleeve procedure provides sufficient weight loss without higher complication rates and side effects.
Patients with duodenal switch lose more weight due to additional malabsorptive component (refashioning of the small intestine). Research studies at 18-24 months after surgery show that:
- The patients with gastric sleeve lose an average of 60% to 70% of their excess body weight.
- The patients with duodenal switch lose an average of 70% to 80% of their excess body weight
Weight loss with DS patients lasts longer also. Duodenal Switch is mainly reserved for morbidly obese.
Reversal of Obesity-Related Disease
Both surgeries lead to significant weight loss and reversal of obesity-associated conditions. With the duodenal switch, however, the patients tend to achieve a relatively lower BMI than the patients who underwent gastric sleeve surgery. Similarly, there is a higher rate of resolution of comorbid conditions, such as diabetes type 2 (T2DM), hypertension, dyslipidemia, obstructive sleep apnea, osteoarthritis, etc. with duodenal switch vs gastric sleeve surgery.