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Gastric bypass 

Illustration en rose et bleu d'un bypass gastrique : représentation graphique de la procédure chirurgicale bariatrique avec des tons de rose et de bleu, montrant la division de l'estomac en une petite poche supérieure et une poche plus grande inférieure, ainsi que le reroutage de l'intestin pour contourner une partie de l'estomac et de l'intestin grêle

Mode of action: Bypass 

Gastric Bypass is one of the bariatric surgery techniques practiced by Dr. Jabbes in Tunisia. It helps to limit food intake, also causes a decrease in the digestion of food and helps to modify the relationship with food.


Gastric Bypass is generally indicated for patients with  BMI greater than 45 , with a rather sweet diet, without fixed schedules.

The Gastric Bypass procedure involves reducing the volume of the stomach and modifying the food circuit. Food no longer passes through the stomach and the upper part of the digestive tract. They go directly to the middle part of the small intestine.

Result of a Gastric Bypass 

The bypass must lead to a very significant weight loss of around 5 kg per month, during the first 6 months, then a weight loss of 2 to 4 kg per month.

According to scientific data, the Bypass causes an average loss of 70% of excess weight in 1 year.

Bypass: The process of the operation

The intervention lasts from 2h to 2h30 in general. It is performed under general anesthesia.  


A camera is introduced through a small hole in the abdominal wall and working instruments are inserted through five other small holes. The size of the stomach is reduced by section and only a small gastric pouch with a volume of 20-30 ml is retained. The intestine is then cut and connected to the gastric pouch. Part of the intestine is thus short-circuited over 75 cm.

At the end of the operation, the incisions are closed with absorbable thread (which disappears on its own). The dressing is carried out with glue, which is also self-removing.

There are two variants of this technique depending on the modality of the intestinal short-circuit: the ByPass in Y and the ByPass in Omega .


Complications and postoperative follow-up of Bypass

Like any bariatric surgery, gastric bypass can have certain complications:


  • A risk of about 1%: haemorrhage, intestinal obstruction, abscess, pulmonary embolism.

  • Oral supplementation with vitamins and trace elements is essential.

In addition to the surgery itself, your physical condition and health affect the risk. About 10-20% of patients who have had surgery to lose weight may require further surgery. Discuss the potential risks of the operation with your surgeon, Dr. Jabbes.


Learn more about Gastric Bypass with Dr. Patrick Noel

Hospitalization & price of a Bypass

The duration of hospitalization is 4 to 5 nights for optimal monitoring.

For obvious security reasons, the duration of the stay will be imposed, namely 7 days / 6 nights on Tunisian territory. Essential time to ensure that you can return home safely.

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