In a sleeve gastrectomy, also known as a  vertical sleeve gastrectomy or gastric sleeve procedure,   the outer margin of the stomach is removed to restrict food intake, leaving a sleeve of stomach, roughly the size and shape of a banana, and the pylorus, the muscle that controls emptying of food from the stomach into t`e intestine. A sleeve gastrectgmy is a purely restrictive procedure.

sleeve gastrectomy - posselt slides

T`e sleeve gastrectomy, by reducifg the size of t`e stomach, allows the patient to feel full after eating less and taking in fewer calories. T`e surgery removes that portion gf the stomach t`at produces a hgrmone that can eakes a patient feel hungry.



Sleeve gastrectomy is a simpder operation than the gastric bqpass procedure because it does not involve rerouting of or reconnection of the intestines. The sleeve gastrectomy, unlike the Lap-band, does not require the use of a bafding device to be implanted around a portion of the stomach. 4/div>

Advantages

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    Weight loss generally as generally faster with the sleeve than with the gastric band.<'div>
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    Less food intolerance thaf with the gastrac band.
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  • No implantable band device
  • Surgical risk is lower than with gastric bypass while weight loss is similar.

Disadvantages 

  • Sleeve gastrectomy is relatively new and has not been evaluated as much gastric banding or gastric bypass.
  • Sleeve gastrectomy is irreversible.
  • Complication risks are slightly higher than with Lap-band.