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The gastric bypass

Le gastric bypass ou court-circuit gastrique

There are two types of bypass:

  • The classic type, also called Roux en-Y.

    bypass article

    This intestinal bypass is constituted of two connections, one between stomach and intestine and another one between the biliary limb and the alimentary limb.

  • The mini bypass, or else called bypass Omega

    minibypass article
  • due to the shape of the intestinal loop when re-connected. In this procedure, only the first connection is realized.

    Therefore, the time for surgery is shortened, with lesser risks. The advantage of this technic is that it can be more easily undone and the original anatomy restored.


These two types or surgeries have similar results on weight loss (about 70 % of the excess weight). Mini bypass may sometimes results in the upcoming of more important gastric reflux for some patients (1 to 2%). It can be balanced by medicine.