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Weight Loss Surgery: Types of Surgery

Weight loss surgery works limiting the amount a food that can be consumed (restrictive procedures), interrupting the absorption the food consumed taken in by the body (malabsorptive procedures), or both limiting food intake and absorption.

Types of Bariaric Surgeries

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Adjustable gastric banding

Gastric banding is a restrictive surgical procedure in which a silicone band is placed around the uppermost part of the stomach and limits the amount of food that can be comfortably eaten at one time. The band is adjustable and can be periodically tightened or loosened depending on your needs. Food passes through the digestive tract and is fully absorbed by your body. Gastric banding is reversible.


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Vertical sleeve gastrectomy

Sleeve gastrectomy is a restrictive surgical procedure. The surgeon creates a small, sleeve-shaped stomach by removing the majority of the stomach. The smaller sleeve stomach is roughly the size of a medium banana, larger than the stomach pouch created during Roux-en-Y bypass. Food passes through the digestive tract normally and is fully absorbed by the body. The sleeve gastrectomy is not reversible.

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Gastric bypass (Roux-en-Y)

Roux-en-Y (pronounced ROO-en-why) gastric bypass surgery is a restrictive and malabsorptive procedure. The surgeon creates a small stomach pouch that restricts the amount of food the patient can comfortably eat. The digestive tract is rerouted, bypassing the duodenum which decreases the amount of nutrients, fat and calories your body absorbs. 


Surgery Methods: Open Surgery Versus Laparoscopic Surgery

Open surgery involves the surgeon creating a long incision to open the abdomen and operating with "traditional” medical instruments. Laparoscopic surgery, or minimally invasive surgery, allows the surgeon to perform the same procedure using several small incisions, a fiber-optic camera, video monitor, and long-handled instruments.

Revisional Procedure

Years after weight loss surgery, a few patients may experience the need to restore an enlarged opening between the stomach pouch and the small intestine or a stretched stomach pouch.