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Gastric Bypass

Gastric Bypass Surgery

This surgery combines a restrictive and malabsorptive component to achieve weight loss. It is a very effective weight loss surgery that has been tried and tested over many decades all over the world.

gastric bypass diagram

The surgery can help achieve up to 70 to 80% excess weight loss. The surgery produces up to 90% resolution of Type 2 diabetes in obese patients as well significant reduction in other obesity related diseases such as hypertension, obstructive sleep apnoea and hypercholesterolemia.

Surgery is generally performed laparoscopically (key hole surgery) and the stomach is reduced in size to a narrow pouch to restrict the amount of food and reduce hunger and a short segment of bowel is joined (anastamosed) to the new stomach to form the bypass and to augment the weight loss effect. This treatment has been performed in tens of thousands patients over the years worldwide. The surgery is relatively safe with 2 to 4% complication rates.

Patients spend about 4 days in the hospital after the operation and stay on liquid high protein diet for three weeks after the operation to allow all the staple lines and anastamosis to heal.


  • Long track record
  • Quick sugar control in diabetics
  • Effective weight loss
  • Dumping syndrome effect with sweet intake
  • Better operation for patients with reflux

Possible complications:

  • Bleeding
  • Ulcer formation
  • Leak from stapleline or anastamosis
  • Hypoglycemia
  • Stenosis of the anastamosis
  • Internal hernia formation
  • Small chance of malnutrition
  • Complications common with any operation such as cardiovascular and respiratory complications
  • <0.5% risk of mortality

This is only a brief description of the operation. We will go through with you in detail what the surgery and subsequent journey entails.

Please contact Advance Surgical on 9386 2634 or via email  –

Read more about Obesity Surgery