Sleeve gastrectomy is the newest advance in weight loss surgery. It offers the advantages of both bypass and banding without the common complications. Like gastric banding, sleeve gastrectomy is a restrictive operation. You will feel full and satisfied with a small meal. You will not require an implanted band or its adjustments. Like gastric bypass, patients lose on average more than 60% of their excess weight, but without the risk of common gastric bypass complications like ulcers or anastomotic stricture.
Sleeve gastrectomy has an important advantage over the other operations in that a portion of the stomach is permanently removed. This portion is the area of the stomach that produces the hormone of hunger " Ghrelin". Patients report significantly less hunger after sleeve gastrectomy. It is a wonderful feeling to lose weight without hunger.
Gastric sleeve is performed laparoscopically and it takes between 30 minutes and an hour.
During the operation about 80% of the stomach is removed, leaving a slender, tubular or "sleeve shaped"stomach.
A gastric sleeve can be performed as a 'stand alone' weight loss procedure or as the first part of a two stages procedure for very large patients (BMI>60) who have been assessed as suitable for weight loss surgery.
Patients will sometimes fail to lose enough weight with a gastric sleeve gastrectomy which may mean a second weight loss operation (bypass) is required. This will usually be done between twelve and eighteen months after the first gastric sleeve operation, depending on the amount of weight loss achieved.
A gastric sleeve is a permanent procedure.
A gastric sleeve is primarily a restrictive procedure and results in weight loss because the new stomach is only a fraction of its original capacity (the stomach capacity is reduced by about 80%). Because you are able to eat only very small amounts of food, you tend to feel full much earlier. Overall this tends to result in fewer calories being taken in resulting in weight loss.
However, a gastric sleeve also has an effect on hormones produced by the stomach, especially "Ghrelin" which is known to be an appetite stimulant. After a gastric sleeve, there is a sustained fall in ghrelin levels and – as a result – loss of appetite.
Another further advantage of the gastric sleeve lies in the fact that because it does not involve bypass of the bowel, there is much less risk of vitamin and mineral deficiencies which can sometimes occur after gastric bypass.
Assuming that everything goes well, you will be discharged from hospital four days after your weight loss surgery. It generally takes patient two weeks to recover and resume normal activities.