HOW A SLEEVE GASTRECTOMY WORKS
The sleeve gastrectomy procedure can be the first step before other surgical procedures (e.g., gastric bypass) or it may be employed as a single procedure for weight loss.
- The surgeon creates a small stomach "sleeve” using a stapling device; the rest of the stomach is removed.
- This procedure induces weight loss in part by restricting the amount of food (and therefore calories) that can be eaten without bypassing the intestines and therefore absorbed.
- Weight loss and improvement in parameters of metabolic syndrome are connected with the resection of the stomach and subsequent neurohormonal changes.
- If the sleeve gastrectomy is used as the first step before gastric bypass, in the second step the surgeon attaches a section of the small intestine directly to the stomach pouch, which allows food to bypass a portion of the small intestine.
Sleeve gastrectomy procedure
The majority of weight loss sleeve gastrectomies performed today use a minimally invasive laparoscopic technique. The entire procedure is done through a small incision in your abdomen. Most surgeons prefer this method because it results in shorter hospital stays, faster recoveries, smaller scars, and less pain than open surgical procedures.
To gain access to the abdominal cavity, small incisions are created on the abdomen. Trocars, which serve as
passageways for the surgical instruments, are placed into the incisions. The surgical instruments are passed through the trocars, to access the abdominal cavity. The surgeon examines the abdominal cavity using a laparoscope or video camera. The average human stomach can expand to hold around 1 to 1.5 liters of food. While in the stomach, food is mixed with digestive enzymes to help breakdown the food to a more simple form. So that is can be more easily digested and absorbed when it is in the small bowel. During a sleeve gastrectomy, a thin vertical sleeve is created by using a stapling device. This sleeve will typically hold between 50 and 150 milliliters. Or, is about the size of a banana. The excised portion of the stomach is removed. By altering the anatomy of the gastrointestinal tract, sleeve gastrectomy changes signals in the body, resulting in decreased hunger and increased feelings of fullness after meals. The bile and pancreatic fluid from the liver and pancreas mix with the food, and allow it to be completely digested and absorbed in the bowel. There is no rerouting of the small bowel or post-operative adjustments needed for the sleeve gastrectomy. As with all weight loss procedures, behavior modification and dietary compliance plays a critical part in determining the long term success of the procedure. All surgery presents risks. Weight, age and medical history determine your specific risks. Ask your doctor if bariatric surgery is right for you.