Sleeve is a complex intervention, with a 4 days hospitalization.

Sleeve is a recent surgical procedure, its long-term results (more than 5 years) are unknown.
Weight loss is usually about 4 kgs per month, during the first 6 months, then from 2 to 4 kgs per month.
This procedure was initially proposed among patients having very high BMI (>50), and at which, for technical reasons, a bypass can prove to be dangerous.
The sleeve enables them to lose approximately 40 kgs before passing, if the weight loss stagnates, to a bypass, which becomes easier to realize.

Currently, some teams propose this intervention like replacement of the gastroplasty for the following reasons:

            - It involves a fast feeling of satiety, like the gastroplasty.
            - It does not require the installation of a foreign body (gastric band).
            - Vomiting is less frequent than with the gastroplasty.
            - It decreases the rate of ghrelin, and thus the feeling of hunger, like the bypass.

According to the very rare scientific studies available, the average weight loss is of 50% of the weight excess in one year, which is an intermediate result between gastroplasty and bypass.

 Denutrition and vitamin deficiencies are rare.
No oral supplementation is necessary. A biological assessment after a weight loss from 25 to 30 kgs is carried out. Sometimes it shows small vitamin deficits which are easily made up by oral way.

 Sleeve is not réversible. However, in a certain number of cases, the tube is likely to dilate at the end of 3 to 4 years, and does not have any more any effectiveness.

Dietary habits must be modified.
3 meals and possibly 2 collations.

Vomiting is rare.                       

A regular follow-up by a multi disciplinary team is necessary.
2 Blood tests are necessary the first year, then 1 blood test per annum, to seek a vitamin deficit.