Gastric Sleeve

Sleevectomy’ or ‘Laparoscopic Sleeve Gastrectomy

A gastric sleeve, also known as a ‘Sleevectomy’ or ‘Laparoscopic Sleeve Gastrectomy’, is an operation to convert the stomach into a long thin tube.  This is done by stapling it along its length and then removing the excess, so that the newly formed smaller stomach is the shape of a sleeve.

The new stomach will have a smaller capacity.  In addition, the production of “hunger hormones” is inhibited, so that patients’ appetite is reduced.

The procedure is carried out under general anaesthetic and is normally keyhole surgery.

It is performed for helping very overweight patients achieve substantial weight loss because it restricts the amount that someone can eat – it is a stomach reduction procedure, so works to reduce the size and capacity of the stomach. The sleeve is a tool to help the patient manage their food intake.

Average excess weight loss is 60 to 70%. Weight loss can be faster or greater (depending on weight pre-surgery) for those that follow these 3 rules:

  • sensible diet (low fat, low sugar, high fruit/veg)
  • smaller portions
  • higher activity level, integrating moderate exercise into their lives.

It may be used as a stand-alone operation or the first part of a two stage operation for very large patients. The second stage is carried out a number of months later when the patient has lost a significant amount of weight.  This means that the risks of needing further surgical procedures are much less.

Who Is a Gastric Sleeve For?

The sleevectomy procedure is advised for patients with a BMI of 35 or more, although this does depend on the patient and, of course, the surgeon’s recommendations.


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