Dr Murat Ustun
Bariatric surgeon with 8,000+ successful procedures, IFSO member and pioneer of ESG in Turkey.
Outcome Guide
Acid Reflux After Gastric Sleeve: What It Means and How It's Fixed
GERD is the sleeve's best-known long-term trade-off — affecting up to 55% of patients. Most cases are manageable; some need repair; a definitive cure exists. Here is how to know which group you're in.
- Sleeve patients with GERD long-term
- 55%
- Sleeve patients with GERD long-term
- Resolved by bypass conversion
- ~90%
- Resolved by bypass conversion
- Endoscopy, not more antacids
- 1st step
- Endoscopy, not more antacids
Why the Sleeve Causes Reflux
A sleeve converts the stomach from a low-pressure pouch into a narrow, high-pressure tube, and the surgery alters the angle and valve anatomy at the top of the stomach. Add a hiatal hernia — present in many patients with obesity and sometimes developing after surgery — and acid gets pushed upward, especially at night.
This is a mechanical problem. That matters, because mechanical problems don't respond indefinitely to chemical solutions: PPIs reduce the acid's burn but do nothing about the pressure or the valve, and non-acid reflux can continue damaging the oesophagus silently.
Red Flags — Get Assessed If…
See a bariatric specialist (not just a GP prescription refill) if any of these apply:
- You need PPIs daily beyond the first year after surgery
- Reflux wakes you at night or you sleep propped up
- Food or liquid regurgitates when bending or lying down
- Symptoms are worsening rather than stable
- You also have weight regain alongside the reflux
- You have difficulty swallowing or food sticking — see a doctor promptly
Long-standing reflux can cause Barrett's oesophagus, a pre-cancerous change that is silent while tablets mask the symptoms. A one-time endoscopy settles whether your oesophagus is safe.
Treatment Ladder: From Tablets to Cure
| Step | What It Involves | Best For | Limitation |
|---|---|---|---|
| Lifestyle + PPI medication | Smaller evening meals, elevation, daily PPI | Mild reflux, first-line for everyone | Controls symptoms; fixes nothing mechanical |
| Diagnostic endoscopy | Camera assessment of sleeve, valve and oesophagus | Anyone on PPIs >12 months or with red flags | Diagnostic — guides the fix |
| Hiatal hernia repair | Laparoscopic repair of the diaphragm opening | Confirmed hernia with preserved sleeve shape | Doesn't help if the sleeve itself is the problem |
| Conversion to mini gastric bypass | Sleeve converted to bypass — acid diverted downstream | Persistent GERD, especially with weight regain | A second operation — 2–3 nights in hospital |
Roughly 90% of patients converted to bypass for GERD stop or dramatically reduce PPIs.
The Definitive Fix: Sleeve-to-Bypass Conversion
When reflux persists despite medication — or when you're simply done taking tablets every day for a mechanical problem — converting the sleeve to a mini gastric bypass is the definitive answer. The small pouch produces little acid, and what remains is routed a metre and a half downstream. It is the same operation used for weight regain after sleeve, which is why the combination of GERD + regain points so strongly toward conversion.
At Istanbul Bariatric Center every conversion starts with diagnostic endoscopy and, where needed, simultaneous hiatal hernia repair — see the full revision surgery guide for the process and pricing.
Reflux Revision Is Precision Work
Conversion for GERD demands accurate endoscopic diagnosis and an experienced revision surgeon — the exact combination a high-volume centre provides.
JCI-Accredited Hospital
All procedures are performed at Liv Hospital, Istanbul — holding the gold-standard Joint Commission International accreditation.
Transparent All-Inclusive Pricing
No hidden fees. Packages include hospital stay, pre-operative tests, transfers, hotel and dietitian aftercare.
Award-Winning Care
WhatClinic Patient Service Award winner six times (2019–2025), with dedicated UK-based aftercare coordinators.