Laparoscopic Sleeve Gastrectomy (LSG) is one of the most commonly performed bariatric operations worldwide. While it achieves excellent weight loss results, gastro-oesophageal reflux disease (GORD) is one of its most significant long-term complications — affecting a substantial proportion of patients after surgery.
Why Does Reflux Occur After Sleeve Gastrectomy?
Several anatomical and physiological changes from the sleeve procedure contribute to worsening or new-onset reflux:
- Reduced lower oesophageal sphincter pressure: The sleeve reduces the angle of His — the natural anti-reflux valve between the oesophagus and stomach — which can weaken the barrier against acid.
- Increased intragastric pressure: The narrowed, tube-shaped stomach generates higher pressures, pushing stomach contents upward.
- Disruption of the fundus: The fundus, which normally acts as a reservoir and pressure buffer, is removed during the sleeve. This limits the stomach's ability to accommodate food without increasing pressure.
- Hiatus hernia: Pre-existing or newly developed hiatus hernia after LSG can worsen reflux significantly.
- Delayed gastric emptying: Some patients develop slower emptying of the sleeve, increasing acid exposure to the oesophagus.
How Common Is It?
Studies report that reflux symptoms occur in 20–35% of patients after sleeve gastrectomy, with some studies reporting rates as high as 47% at five years. Notably, reflux can develop even in patients who had no prior symptoms before surgery.
Barrett's oesophagus — a pre-cancerous change in the oesophageal lining triggered by chronic acid exposure — has also been reported at higher rates in post-sleeve patients, making surveillance and management particularly important.
Symptoms to Watch For
Post-LSG reflux can present as:
- Heartburn or burning sensation in the chest
- Regurgitation of food or acid into the throat
- Difficulty swallowing (dysphagia)
- Chronic cough or hoarse voice
- Worsening symptoms at night or when lying down
- Nausea after eating
If you are experiencing any of these symptoms after your sleeve gastrectomy, it is important to discuss them with your gastroenterologist.
How Is Post-Sleeve Reflux Diagnosed?
Diagnosis typically involves:
- Gastroscopy (OGD): To assess the oesophageal lining, look for signs of oesophagitis, Barrett's changes, or hiatus hernia.
- pH monitoring: Ambulatory 24-hour pH-impedance studies measure the frequency and duration of acid reflux episodes.
- Oesophageal manometry: Assesses lower oesophageal sphincter pressure and oesophageal motility.
- Barium swallow: Can identify structural abnormalities, including hiatus hernia or sleeve anatomy.
Treatment Options
1. Lifestyle and Medical Management
Initial management includes:
- Proton pump inhibitors (PPIs) — the first-line medical treatment for acid suppression
- Dietary modifications: avoiding trigger foods (fatty, spicy, acidic foods, coffee, alcohol)
- Eating smaller, more frequent meals
- Not lying down for at least two hours after eating
- Elevating the head of the bed
While PPIs are effective for symptom control, they do not address the underlying anatomical cause of reflux in post-sleeve patients.
2. Endoscopic Treatments
For patients with persistent reflux despite medical therapy, endoscopic options are increasingly available:
- Transoral Incisionless Fundoplication (TIF): A suturing device is used endoscopically to recreate the anti-reflux valve at the gastro-oesophageal junction, without any incisions.
- Stretta procedure: Radiofrequency energy is applied to the lower oesophageal sphincter to strengthen muscle tone and reduce reflux.
- Hiatus hernia repair combined with endoscopic fundoplication: In appropriate patients, combining laparoscopic hernia repair with TIF (cTIF) can provide durable reflux control.
3. Conversion to Roux-en-Y Gastric Bypass
For patients with severe, refractory reflux after LSG — particularly those with Barrett's oesophagus — conversion to Roux-en-Y Gastric Bypass (RYGB) is often the most effective long-term solution. RYGB redirects bile away from the oesophagus and significantly reduces acid exposure. This is the most definitive surgical option when endoscopic and medical measures have failed.
Reflux and Barrett's Oesophagus: Why Surveillance Matters
Patients who develop reflux after LSG are at increased risk of Barrett's oesophagus — a condition where the normal oesophageal lining is replaced by intestinal-type cells in response to repeated acid injury. Barrett's oesophagus carries a small but real risk of progression to oesophageal adenocarcinoma.
For this reason, post-sleeve patients with reflux symptoms should undergo regular gastroscopic surveillance. Early detection allows for endoscopic treatment (such as radiofrequency ablation or EMR) to prevent progression.
When to Seek Help
You should seek assessment if you:
- Developed new or worsening heartburn after your sleeve gastrectomy
- Are taking PPIs daily but still have symptoms
- Experience difficulty swallowing, chest pain, or unexplained weight loss
- Have not had a post-operative gastroscopy to assess your oesophagus
Do not ignore persistent reflux after sleeve gastrectomy. Long-term untreated acid exposure can cause oesophageal damage and, in some cases, increase cancer risk. Early review is always better.
Ready to Take the Next Step?
If you are experiencing reflux after sleeve gastrectomy and would like an assessment, book a consultation with Dr Fazal.
Phone: 07 3522 2900
Email: admin@gastroscope.clinic
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This article is for educational purposes only and is not a substitute for medical advice. Always consult a qualified healthcare provider.