Book a First Consultation
What is a Mini Gastric Bypass? (OAGB)
The OAGB is also known as the ‘single loop bypass’ and the mini-bypass. It is a minimally invasive procedure performed with a laparoscopic technique.
There are basically two main steps to this operation:
- The surgeon creates a small tube-like stomach pouch which is detached from the rest of the stomach.
- This gastric pouch is then connected up to the intestine, bypassing up to 200cm of the total length of the small bowel.
This technique differs from the Roux-en-Y gastric bypass, which has an extra join between the small bowel.
The OAGB typically results in 30 to 40% weight loss or up to 80% excess weight loss over a period of about 18 months. The most rapid weight loss is usually in the first 6 months. This weight loss is achieved through both the restrictive effect of the small pouch and the metabolic effect of bypassing the small intestine.
The OAGB has a good complication profile with a low complication rate of around 5%. A small proportion of those patients may require revisional surgery for bile reflux or malnutrition. A significant advantage is that the OAGB does result in a lower incidence of small bowel obstruction from internal hernia formation.
- Technically easier to perform and a shorter operating time than the RYGB
- Considered reversible
- Significant weight loss
- Maintain good quality of eating
- Lower risk of internal hernia
- Risk of stomach ulcer
- Risk of micronutrient deficiencies
- Risk of dumping syndrome
- Risk of bile reflux
Other weight loss surgery procedures
You should have access to all surgical options, as determined by your unique needs. Both surgeons are highly experienced general surgeons with sub-specialty training in bariatric and upper gastrointestinal surgery. Both trained in high-volume specialist bariatric centres in Brisbane as well as interstate and overseas.
This means they are able to perform the full range of weight loss surgeries, as well as revision surgery. It’s about determining which procedure is right for you and your body.
Your surgeon will perform your weight loss surgery at the Mater Hospital in Pimlico. While your chosen surgeon will be your primary surgeon, both surgeons will attend. This means you get the unique benefit of two qualified specialist surgeons during your operation
Frequently asked questions about weight loss surgery
- Dr Benedict Mackay or Dr Garth McLeod's surgical time and a second surgeon assisting
- The anaesthetist’s fee
- Hospital fees
- Medications, such as pain relief
- Follow up consultations
- Ongoing support from dietitians, exercise physiologists, psychologists and other allied health professionals
Do you still have questions? Contact us