Gastric Bypass
Roux-en-Y gastric bypass for long-term weight management and metabolic improvement.
Mini Gastric Bypass (One Anastomosis Gastric Bypass) in Turkey
The mini gastric bypass, formally known as the One Anastomosis Gastric Bypass (OAGB), is a simplified yet highly effective bariatric procedure that has gained significant popularity over the past decade. Endorsed by the International Federation for the Surgery of Obesity and Metabolic Disorders (IFSO), this procedure offers comparable weight loss to the traditional Roux-en-Y bypass with a shorter operative time and reduced surgical complexity.
How the Procedure Is Performed
Under general anaesthesia, the surgeon creates a long, narrow gastric pouch from the upper stomach using laparoscopic stapling. A single loop of small intestine is then connected to this pouch approximately 200 cm from the ligament of Treitz, creating one anastomosis (connection) instead of the two required in a Roux-en-Y bypass. This streamlined approach reduces operative time to 1.5-2.5 hours while achieving both restrictive and malabsorptive weight loss effects.
Candidacy Criteria
The mini gastric bypass is suitable for patients with a BMI of 35 or above, or those with a BMI of 30-35 accompanied by metabolic conditions. It is an excellent option for patients who have had a previous gastric sleeve and require a revision procedure for additional weight loss. The OAGB is also highly effective for the management of type 2 diabetes, with remission rates comparable to the Roux-en-Y bypass.
Recovery and Dietary Transition
Hospital discharge typically occurs after 2-3 nights. The dietary protocol follows a 5-week progression from clear liquids through pureed and soft foods to regular meals. Patients must commit to daily multivitamin, calcium, and vitamin B12 supplementation. Most patients achieve 65-75% excess weight loss within 18 months.
Advantages of Treatment in Turkey
Turkish bariatric surgeons are among the highest-volume OAGB practitioners globally. Centres in Istanbul offer state-of-the-art operating theatres equipped with 4K laparoscopic systems, dedicated bariatric anaesthesia teams, and structured aftercare programmes including remote nutritional counselling for international patients.
Frequently Asked Questions
How does the mini gastric bypass differ from the traditional Roux-en-Y?
The mini gastric bypass uses a single intestinal connection (anastomosis) instead of two, resulting in a simpler and shorter operation. The gastric pouch is also longer and narrower. Weight loss results are comparable, though the mini bypass may have a slightly higher rate of bile reflux, which is managed with medication if it occurs.
Is the mini gastric bypass suitable as a revision after gastric sleeve?
Yes, the mini gastric bypass is one of the most common and effective revision procedures after a gastric sleeve. It adds a malabsorptive component to the existing restriction, boosting weight loss for patients who have experienced weight regain or insufficient initial loss after their sleeve gastrectomy.
What is the risk of bile reflux after mini gastric bypass?
Bile reflux occurs in approximately 5-10% of mini gastric bypass patients. Symptoms include nausea and a bitter taste. It is usually mild and manageable with proton pump inhibitors. If severe, the procedure can be converted to a Roux-en-Y configuration to eliminate reflux entirely.
Treatment Overview
Duration
1.5-2.5 hours
Recovery Time
2-4 weeks
Price Range
£3,500 - £5,500
Benefits
- Simplified single-anastomosis technique reducing operative time
- Comparable weight loss to Roux-en-Y at 65-75% excess weight loss
- Excellent type 2 diabetes remission rates
- Lower complication rate than traditional gastric bypass
- Effective revision option for prior gastric sleeve patients
- IFSO-endorsed procedure with strong clinical evidence
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