Gastric Sleeve to Mini Bypass Revision in Turkey
Restart your weight loss or resolve persistent reflux by converting your sleeve to a mini gastric bypass, from £3,160.
If your gastric sleeve has stopped delivering the weight loss you need, or if you are struggling with persistent acid reflux that medication cannot control, converting to a mini gastric bypass (also called a one-anastomosis gastric bypass or OAGB) can be an effective next step.
A mini bypass adds a malabsorptive component to your existing sleeve. Your surgeon connects your sleeve to a section of the small intestine further downstream, bypassing a portion where calories would normally be absorbed. This means your body absorbs fewer calories from the food you eat, restarting weight loss and often resolving reflux at the same time.
The mini bypass is a simpler revision than a full Roux-en-Y bypass because it involves only one intestinal connection (anastomosis) instead of two. This means a shorter procedure, a slightly simpler recovery, and fewer potential complications, while still delivering significant additional weight loss.
At The Health Store Turkey, your revision package includes the procedure in a government-licensed hospital, 4 nights of hospital care, 5-star hotel accommodation, private airport transfers, a personal translator, and 12 months of aftercare. From £3,100, fully inclusive. In the UK, the same revision costs £10,000-£14,000 privately.
What Is Gastric Sleeve to Mini Bypass Revision?
How the Sleeve to Mini Bypass Conversion Works
Your existing gastric sleeve is already in place, a narrow, banana-shaped stomach that restricts food intake. The mini bypass conversion adds a bypass element to this existing restriction.
Your surgeon creates a connection (anastomosis) between the lower end of your sleeve and a loop of the small intestine approximately 150-200cm downstream from the stomach. This means food has a shorter pathway through the intestine, and your body absorbs fewer calories and fats.
The procedure is performed laparoscopically (through small incisions) under general anaesthesia and typically takes 60-90 minutes. Because your sleeve is already in place, no additional stomach tissue needs to be removed, the revision focuses solely on creating the intestinal connection.
Mini Bypass vs Full Roux-en-Y Bypass
A mini bypass involves one intestinal connection, while a full Roux-en-Y involves two. This makes the mini bypass a technically simpler procedure with a shorter operating time. Both produce effective weight loss through malabsorption, but the mini bypass may carry a slightly higher risk of bile reflux (bile entering the stomach). Your surgical team will recommend the most appropriate option based on your anatomy and medical history.
Am I Suitable?
A sleeve to mini bypass revision may be right for you if:
- You have had a gastric sleeve but your weight loss has stalled or reversed significantly
- You are experiencing persistent acid reflux that medication cannot adequately control
- You have regained a substantial amount of weight after your initial sleeve
- You are committed to the dietary and lifestyle changes required after a bypass procedure
You may not be suitable if:
- Your original sleeve anatomy is not suitable for revision (assessed during your consultation)
- You have active gastrointestinal conditions that need treatment first
- You have severe nutritional deficiencies that need correction before further surgery
- You have conditions that make general anaesthesia unsafe
Your free consultation includes a detailed review of your original sleeve, current weight trajectory, and symptoms. Your surgical team will assess whether a mini bypass revision is the best option or whether an alternative approach (such as a full Roux-en-Y revision or re-sleeve) might be more appropriate.
What Happens During the Procedure?
Before Your Procedure
Your patient coordinator collects information about your original sleeve, when it was performed, your weight loss history, current symptoms, and any previous records. Pre-operative blood work assesses your nutritional status, which is important for planning a safe revision.
You receive preparation guidance including dietary adjustments and a pre-operative liver-shrinking diet.
On the Day
Pre-operative checks include blood tests, imaging, and consultations with your surgeon and anaesthetist. Your surgeon confirms the revision plan based on your individual anatomy.
The procedure takes 60-90 minutes under general anaesthesia. Your surgeon works laparoscopically, identifying your existing sleeve and creating the intestinal connection to complete the mini bypass.
After Your Procedure
You spend 3-4 nights in hospital. Your medical team monitors for any signs of leaking at the new connection, manages pain, and ensures you tolerate clear fluids. Walking is encouraged from day 1.
Once discharged, you recover at your 5-star hotel before your airport transfer. Your aftercare team provides detailed nutritional guidance for your new bypass anatomy.
Recovery & Aftercare
What to Expect During Recovery
Days 1-4 (Hospital): Close monitoring, clear liquids, pain management. Your team checks for any complications at the new anastomosis site. Walking is important for recovery and blood clot prevention.
Week 1-2 (Home): Liquid diet continues. You may notice changes in your bowel habits as your body adjusts to the malabsorptive component. Fatigue is common during this phase.
Week 2-4: Soft, pureed foods are introduced. Energy levels improve. Most patients return to desk-based work within 2-3 weeks.
Month 2-6: Gradual transition to normal foods in smaller portions. Weight loss restarts and accelerates. Many patients with reflux notice significant improvement during this period.
Month 6-12: Steady weight loss continues. Your aftercare programme includes regular blood tests to monitor nutritional levels, as the bypass component increases your supplement requirements compared to a sleeve alone.
Supplements After a Mini Bypass
You will need a more comprehensive supplement routine than after your original sleeve. This typically includes a daily multivitamin, iron, calcium, vitamin D, vitamin B12, and potentially fat-soluble vitamins (A, E, K). Regular blood tests (every 3-6 months initially) monitor your levels and guide adjustments.
Risks & Considerations
A sleeve to mini bypass revision carries the risks associated with bypass procedures, plus additional considerations for revision surgery.
Common Side Effects
- Nausea and discomfort in the first few days
- Changes in bowel habits (looser stools, more frequent bowel movements)
- Dumping syndrome (nausea, cramping after sugary or fatty foods), manageable by adjusting your diet
- Fatigue during the early recovery phase
Less Common Risks
- Anastomotic leak at the new intestinal connection (approximately 1-3%, monitored during your hospital stay)
- Bile reflux (bile entering the stomach through the single anastomosis, a risk specific to mini bypass)
- Nutritional deficiencies (more significant than after a sleeve alone, requiring comprehensive supplementation)
- Blood clots (reduced by early mobilisation)
- Internal hernia (a risk with any bypass procedure)
How Your Risk Is Managed
Your procedure takes place in a government-licensed hospital with experienced revision bariatric surgeons. The extended hospital stay provides thorough monitoring after the revision. Pre-operative blood work establishes your nutritional baseline, and your aftercare programme includes regular blood tests to monitor and manage any deficiencies.
UK vs Turkey: What You Save
UK prices are indicative ranges based on private healthcare providers. Your THST price is confirmed during your free consultation.
UK Aftercare: We Are Here When You Get Home
Unlike other medical tourism companies, we do not leave you on your own once you are back in the UK. We have two dedicated aftercare clinics staffed by NHS-registered wound care specialists, so you can see a professional face-to-face for wound checks, dressing changes, and recovery support.
Medical disclaimer: Results of any surgical or interventional procedure may vary from person to person. You are advised to consult your physician for detailed information before undergoing any procedure. The information on this page is for general guidance only and does not constitute medical advice. See our Medical Disclaimer for full details.
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Frequently Asked Questions
Several factors can cause a sleeve to lose effectiveness over time. Your remaining stomach may have stretched gradually, allowing larger portions. Hormonal adaptations can reduce the appetite-suppressing effects. Dietary habits may have drifted away from the guidelines. In some cases, the initial sleeve may not have been made small enough. A mini bypass revision addresses these issues by adding a malabsorptive component, even if your sleeve has stretched, the bypass reduces how many calories your body absorbs from the food you eat.
In many cases, yes. Acid reflux is a common complication of gastric sleeves, and converting to a bypass often resolves it. The bypass redirects food and stomach acid away from the oesophagus, reducing the pressure that causes reflux. However, a mini bypass carries a small risk of bile reflux (a different type of reflux involving bile rather than acid). Your surgical team will assess your specific reflux pattern and recommend the most appropriate revision approach.
Most patients who convert from a sleeve to a mini bypass lose a significant portion of their regained weight, plus additional weight they may not have lost with the sleeve alone. The malabsorptive component means your body absorbs fewer calories, restarting weight loss even if your dietary intake remains the same. Your results depend on your starting point and your commitment to the dietary guidelines. Your consultation will provide realistic expectations based on your individual situation.
A mini bypass (one-anastomosis gastric bypass) involves one intestinal connection, while a full Roux-en-Y involves two. The mini bypass is a shorter, technically simpler procedure with comparable weight loss results. The main disadvantage of the mini bypass is a slightly higher risk of bile reflux compared to the Roux-en-Y. Your surgical team will recommend the most appropriate option based on your anatomy, medical history, and the specific reasons for your revision.
Yes. Many patients who come to The Health Store Turkey for revision procedures had their original sleeve performed at a different hospital or in a different country. Your surgical team will review your previous operative records and may request imaging to understand your current anatomy. Providing as much information as possible about your original procedure, including the surgical report if available, helps your team plan the safest revision approach.
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