Comparing Gastric Sleeve and Bypass Procedures

If you’ve made the decision to undergo bariatric surgery in Houston, you’ll meet with the bariatric surgeon to discuss your health history and what you can expect. You’ll also need to choose the type of bariatric surgery you wish to have. Your bariatric surgeon can provide recommendations, based on your current health and your goals for the outcome. These weight loss surgery options may include a gastric bypass procedure or gastric sleeve surgery. Comparing Gastric Sleeve and Bypass Procedures

Surgical Approaches

The primary difference between these two procedures is the approach the surgeon uses. During a gastric sleeve surgery, the bariatric surgeon removes about 60 percent of the stomach, leaving a tube-shaped “sleeve.” This type of surgery uses the restrictive approach, which means it significantly restricts the amount of food the patient can eat at a time. Gastric bypass combines the restrictive approach with the malabsorptive approach, which means patients eat less and their bodies absorb fewer calories and nutrients. During this surgery, the bariatric surgeon creates a smaller stomach pouch and reroutes the intestines. Food bypasses the main stomach and instead enters the small pouch, from which it goes directly into the small intestine.

Anesthesia Requirements

You may wish to consider anesthesia when choosing between these surgeries. Individuals who are obese, especially those with co-morbidities, have a higher risk of complications from general anesthesia. Undergoing a longer surgery requires you to be under anesthesia for a longer period of time. A gastric bypass surgery may take about two hours and 45 minutes. A gastric sleeve surgery may take about one hour and 40 minutes.

Weight Loss Outcomes

With either surgery, you can expect to lose a significant percentage of your excess weight , provided you follow your dietary guidelines. However, gastric bypass patients tend to lose weight faster than gastric sleeve patients. A gastric bypass may lead to a 60 to 80 percent loss of excess weight during the 12 to 18 months. During the first year after a gastric sleeve procedure, patients may lose 50 to 80 percent of excess weight. For some patients, slow and steady weight loss may actually be preferable because there is less concern regarding excess skin.

Disclaimer: These articles do not provide patient-specific medical advice. Since all patients have unique needs and limitations, they should consult their physicians prior to following any recommendations presented here.

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