Roux-Y Gastric Bypass

Roux-Y Gastric Bypass surgery is rarely used by Dr Martin. There is a higher chance of chronic pain and internal hernia with this procedure when compared to the mini gastric bypass.

Roux-Y Gastric Bypass surgery uses a combination of restrictive and malabsorption techniques. Staples are used to create a smaller stomach to limit the amount of food intake and a large portion of the small intestine is bypassed to limit the nutrients and calories absorbed.

BWLS RouxenY

Procedure Roux-Y Gastric Bypass

EXPECTED WEIGHT LOSS: 30-50% of your weight


In the Roux-Y procedure, the intestine is divided and one end connected to the stomach pouch while the other end is reconnected back to the intestine. This can be performed laparoscopically through tiny incisions (minimally invasive technique) or through a large open incision (open technique).

The lower section of the intestine is attached to the opening in the stomach pouch creating what is referred to as the “roux limb”. The upper section of the small intestine which carries digestive juices from the remaining portion of the stomach is attached at the distal end of the roux limb. The roux limb enables food to bypass the lower stomach, duodenum, and a portion of the small intestine. At the end of the procedure, the incisions are closed with sutures.




  • Laparoscopic procedure “keyhole surgery” so less invasive
  • Limits the amount of food ingested and also the calories absorbed
  • Increases intestinal production of GLP1 which stimulates insulin release and is more potent for diabetes cure
  • Ability to eat bread and meat is a little easier
  • A little more weight loss than gastric sleeve
  • Potentially reversible
  • Less iron deficiency and reflux than bypass surgery


  • Vitamin and trace element deficiency
  • Intolerance to certain foods
  • Dumping syndrome
  • Requires a lifelong multivitamin
  • Bile reflux, though rare
  • Greater risk of internal hernia, small bowel obstructions, chronic abdominal pains


  • High BMI >45
  • Diabetics
  • Severe reflux
  • Prior gastric banding
  • Patient preference


  • Lifelong follow up with a physician is required for blood tests to ensure proper health and nutrition
  • Bowel leak through the anastomosis (surgical joins)
  • Gallstones
  • Dumping syndrome – meals flood the intestine causing dizziness, nausea and diarrhoea
  • Nausea
  • Dehydration
  • Indigestion
  • Reactive hypoglycaemia
  • Nutrient deficiencies
  • Incisional hernia
  • Wound infections
  • Marginal ulcers
  • Stomal stenosis
  • Haemorrhage
  • Infection
  • Bleeding
  • Bile reflux
  • Venous thromboembolism

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