What is the Roux-en-Y Gastric Bypass?

Historically the gastric bypass was based on the weight loss observed among patients undergoing partial stomach removal for cancer and peptic ulcer disease. In 1966 Dr Mason, a surgeon from the University of Iowa, described the first gastric bypass, consisted of an horizontal stomach pouch with a loop small bowel configuration (Mason loop). Due to severe bile reflux the initial bypass surgery underwent modification which resulted in the “Roux-en-Y” gastric bypass.

How is the Roux-en-Y performed?

Over the years several modifications to the technique was proposed to increase the weight loss and durability of the effect. Modifications to pouch size and limb lengths and using a ring to prevent expansion of the aperture between the stomach and the small bowel loop are most notable.

Currently the most common technique involves the creation of a small 30ml stomach pouch, a biliary limb of 70 cm and a roux limb of 150 cm. An exponential growth of this operation was noted since the adoption of laparoscopic (key hole access to the abdominal cavity) approach to the gastric bypass in 1994.

How is the Roux-en-Y effective for weight loss?

The Roux-en-Y typically results in 70 to 80% weight loss.

Would weight loss surgery benefit you?

BMI is one of the leading ways of measuring obesity. Find out your BMI and discover if you’re a candidate for surgery.
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If you do not meet the BMI or weight criteria, you still may be considered for surgery if your BMI is over 30 and you are suffering serious health problems related to obesity.

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BMI is not the only criteria

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If you choose we can share information about your health, medical history and lifestyle with our team who will determine whether you are a candidate for weightloss surgery.


YES, all patients require a referral in order to see Mr Abbas.

Fees are dependent upon whether the patient holds any concession cards, such as a Pension or Health Care Card.

Currently initial consultation fees range between $130 and $250, with a medicare rebate of $76.15.

Waiting times vary and are dependent on the nature of surgery required, the location at which the surgery is to be performed, and associated availability of theatre times and the individual circumstances of the patient eg: private/self-funded.

Yes. All fees associated with surgery will be discussed with the patient prior to any surgery.

Medicare rebates are available for all applicable billing items.

Private health funds will contribute to the cost of inpatient surgical services, depending on the level of your cover, and whether or not you hold any concession cards.