Dr Devesh Kaushal Specialist General & Upper-GI Surgeon Sydney

Dr Devesh Kaushal

MBBS, MS, GESA, FRACS

Gastric Sleeve and Acid Reflux: What You Need to Know Before Surgery

Gastric Sleeve and Acid Reflux

A Campbelltown Surgeon Explains

If you are considering gastric sleeve surgery and you already experience acid reflux – or you are worried about developing it after surgery – you are asking exactly the right question before, rather than after, your procedure.

Acid reflux, also known as GORD (gastro-oesophageal reflux disease), has a genuinely important and sometimes complicated relationship with gastric sleeve surgery. For some patients, the sleeve improves their reflux. For others, it can make existing reflux worse or even trigger new reflux symptoms that were not present beforehand. Understanding this relationship before surgery allows you and your surgeon to make the right decision together.

This guide is written by Dr Devesh Kaushal, upper GI and general surgeon based in Campbelltown and Liverpool, South Western Sydney, who assesses reflux status as a routine and essential part of every bariatric surgery consultation.

Appointments available within 4-8 weeks depending on urgency

Book online 24/7 at drdeveshkaushal.com.au  |  Call (02) 7906 8312

Why Is There a Link Between Gastric Sleeve Surgery and Reflux?

Gastric sleeve surgery (sleeve gastrectomy) involves removing roughly 75 to 80% of the stomach, leaving a narrow tube. This changes the anatomy and pressure dynamics of the upper digestive tract in ways that can affect reflux – sometimes for better, sometimes for worse.

 

The anatomical and physiological reasons reflux can be affected:

  • The remaining stomach tube has reduced capacity to act as a reservoir, which can increase pressure and the likelihood of acid moving upward
  • The angle and structure around the lower oesophageal sphincter – the valve that normally prevents reflux – can be altered during the stapling process
  • Reduced stomach volume can mean food and acid sit closer to the oesophagus after eating
  • Pre-existing hiatus hernias, if not identified and addressed at the time of sleeve surgery, can worsen reflux symptoms afterward
  • Conversely, significant weight loss itself – regardless of which bariatric procedure is used – tends to reduce abdominal pressure and can improve reflux for many patients

 

The honest, evidence-based picture: Some patients see their reflux improve after gastric sleeve surgery due to weight loss. Others develop new reflux, or see existing reflux worsen, due to the anatomical changes. Both outcomes are well documented in the medical literature – which is exactly why a thorough pre-operative assessment matters.

Who Is Most Likely to Develop or Worsen Reflux After Gastric Sleeve?

Reflux outcomes after gastric sleeve surgery are not random – certain patient factors make new or worsening reflux significantly more likely:

 

1

Pre-Existing GORD

Patients who already experience frequent or significant reflux before surgery are at higher risk of their symptoms continuing or worsening after a sleeve. This does not automatically rule out sleeve surgery, but it is an important factor in the discussion about which bariatric procedure to choose.

 

2

Undiagnosed or Untreated Hiatus Hernia

A hiatus hernia – where part of the stomach pushes up through the diaphragm into the chest – is a common and significant contributor to reflux. If present and unaddressed at the time of sleeve surgery, it is one of the most common reasons for new or worsening reflux afterward. This is why pre-operative endoscopy is so important.

 

3

Technical Factors During Surgery

The width and shape of the remaining stomach sleeve, and how closely the stapling follows the correct surgical technique, can influence reflux outcomes. An experienced bariatric surgeon following meticulous technique reduces – though cannot entirely eliminate – this risk.

 

4

Higher Starting BMI and Slower Weight Loss

Reflux improvement after bariatric surgery is closely linked to the degree of weight loss achieved. Patients who lose less weight, or who experience weight regain over time, are less likely to see reflux improvement and more likely to see it persist or worsen.

 



Pre-Operative Reflux Assessment: What Dr Kaushal Checks Before Your Sleeve

Because the relationship between sleeve surgery and reflux is so significant, a thorough pre-operative reflux assessment is a standard part of preparing for gastric sleeve surgery with Dr Kaushal.

 

  • Detailed symptom history: A careful discussion of any heartburn, regurgitation, chest discomfort, or swallowing difficulties – even mild or infrequent symptoms are relevant.
  • Upper endoscopy (gastroscopy): A camera examination of the oesophagus and stomach to check for hiatus hernia, oesophagitis (inflammation from acid), Barrett’s oesophagus, or other findings that influence the surgical plan.
  • Discussion of current reflux medication: Use of proton pump inhibitors (such as omeprazole or pantoprazole) or other reflux medications is an important part of the assessment.
  • Consideration of alternative procedures: In patients with significant pre-existing GORD, Dr Kaushal may recommend gastric bypass instead of sleeve, given its generally more favourable effect on reflux symptoms.

 

If a hiatus hernia is found: It is generally repaired at the same time as the sleeve procedure. Addressing the hernia at the time of surgery significantly reduces the risk of post-operative reflux compared to leaving it untreated.



If You Have Significant Reflux: Sleeve vs Bypass

For patients with significant pre-existing GORD, this is one of the most important factors in choosing between gastric sleeve and gastric bypass.

 

Gastric Sleeve and Reflux

•        Can improve reflux through weight loss in many patients

•        Can worsen or trigger new reflux in others – the less predictable option

•        Hiatus hernia repair at time of surgery reduces this risk significantly

•        Generally not first choice for patients with severe, longstanding GORD

Gastric Bypass and Reflux

✔     Typically improves or resolves reflux symptoms significantly

✔     The bypass anatomy diverts acid away from the oesophagus

✔     Often the preferred recommendation for patients with severe GORD

✔     Considered the more reflux-favourable bariatric option overall

 

This does not mean every patient with reflux should automatically have a bypass instead of a sleeve – it means reflux status is one of several important factors that should genuinely influence which procedure is recommended for you specifically.



What If I Develop Reflux After My Gastric Sleeve?

If new or worsening reflux symptoms develop after sleeve surgery, there is a clear, structured approach to managing it – this is a well-recognised situation, not an unusual complication.

 

Step-by-step management approach:

  • Initial trial of proton pump inhibitor medication (such as omeprazole or pantoprazole) – this resolves symptoms for many patients
  • Dietary review – smaller meals, avoiding lying down soon after eating, and reducing known trigger foods (caffeine, alcohol, spicy or fatty foods)
  • Repeat upper endoscopy if symptoms persist – to check for hiatus hernia, oesophagitis, or other findings that may not have been present or visible before surgery
  • Assessment for an undiagnosed or recurrent hiatus hernia, which may require surgical repair
  • In persistent, severe cases not responding to the above measures, conversion from sleeve to gastric bypass is a recognised and often effective solution

 

Reassurance: Most reflux symptoms after sleeve surgery are manageable with medication and dietary adjustment. A small proportion of patients require further intervention, and Dr Kaushal will guide you through this process if it applies to you.

 

Reducing Reflux Risk After Gastric Sleeve: Practical Steps

Whether or not you have a history of reflux, these habits genuinely help minimise reflux symptoms after gastric sleeve surgery:

  • Eat smaller meals slowly and avoid overfilling the smaller stomach
  • Avoid lying down or going to bed within 2 to 3 hours of eating
  • Elevate the head of your bed slightly if night-time reflux is an issue
  • Limit common trigger foods – caffeine, alcohol, chocolate, spicy and fatty foods
  • Avoid carbonated drinks, which can increase stomach pressure
  • Maintain steady, ongoing weight loss rather than regaining weight over time
  • Take any prescribed reflux medication consistently, not just when symptomatic
  • Attend your follow-up appointments so any new symptoms are identified and managed early

Normal Post-Sleeve Sensations vs Genuine Reflux Symptoms

Often Normal in Early Recovery

Discuss With Dr Kaushal

✔     Occasional mild fullness or pressure after meals

✔     Brief discomfort if eating too quickly in early weeks

✔     Mild, occasional burping

✔     Sensitivity to very rich or fatty foods initially

✘     Frequent burning sensation in the chest or throat

✘     Regular regurgitation of food or acid, especially at night

✘     A persistent sour or bitter taste in the mouth

✘     Difficulty or pain swallowing

✘     A chronic cough or hoarseness with no other cause

✘     Symptoms not improving with over-the-counter antacids

Why Choose Dr Kaushal for Gastric Sleeve Surgery in Campbelltown?

 

  • FRACS qualified – Fellow of the Royal Australasian College of Surgeons
  • Thorough pre-operative reflux assessment as standard practice for every bariatric patient
  • Performs both gastric sleeve and gastric bypass – recommends what genuinely suits your reflux profile
  • Repairs hiatus hernias at the time of sleeve surgery when identified
  • Advanced surgical training at University Hospital Coventry, UK
  • Published researcher – patients benefit from the latest evidence-based techniques
  • Operates across Campbelltown Public and Private Hospitals, Liverpool, Sydney Southwest Private, and The George Hospital
  • Medicare rebates and private health insurance accepted
  • Appointments available within 4-8 weeks depending on urgency

Frequently Asked Questions - Gastric Sleeve and Acid Reflux

Can I have gastric sleeve surgery if I already have acid reflux?

Yes, in many cases. Mild or well-controlled reflux does not automatically rule out sleeve surgery. However, significant or longstanding GORD is an important factor that Dr Kaushal will weigh carefully, and in some cases gastric bypass may be recommended instead due to its more favourable effect on reflux.

 

Will gastric sleeve surgery definitely make my reflux worse?

Not necessarily. Outcomes vary – some patients see their reflux improve due to weight loss, while others experience new or worsening symptoms due to anatomical changes. This is precisely why pre-operative assessment, including endoscopy, is such an important step before proceeding.

 

What if I am diagnosed with a hiatus hernia before my sleeve surgery?

A hiatus hernia found during your pre-operative assessment is typically repaired at the same time as your gastric sleeve procedure. Addressing it during the same operation significantly reduces the likelihood of reflux problems afterward, compared to leaving it untreated.

 

Can I switch to gastric bypass if my reflux gets worse after a sleeve?

Yes – if reflux symptoms are severe and not controlled with medication and dietary changes, conversion from sleeve to gastric bypass is a recognised option. This is a more complex procedure than the original sleeve and is considered carefully on a case-by-case basis.

 

Should I keep taking my reflux medication after gastric sleeve surgery?

Many patients are advised to continue or start a proton pump inhibitor for a period after surgery as a preventive measure, even without active symptoms. Dr Kaushal will give you specific guidance based on your individual reflux history and surgical findings.

 

How do I book a gastric sleeve consultation in Campbelltown?

Call (02) 7906 8312, email [email protected], or book online at drdeveshkaushal.com.au. A GP referral is required to access Medicare rebates. Appointments are available within 4 to 8 weeks depending on urgency.

Book Your Gastric Sleeve and Reflux Assessment in Campbelltown

If you are considering gastric sleeve surgery and have any history of acid reflux – even mild or occasional symptoms – it is important to raise this clearly at your consultation. Dr Devesh Kaushal provides thorough, individualised assessment for patients across Campbelltown, Liverpool, and South Western Sydney, ensuring the procedure recommended is genuinely the right fit for your digestive health, not just your weight loss goals.

Getting this assessment right before surgery is one of the most important steps toward a smooth recovery and a result you are genuinely happy with.

Contact Dr Devesh Kaushal

Liverpool Consulting Rooms

Phone:  (02) 7906 8312

Email:  [email protected]

Book Online:  drdeveshkaushal.com.au

Office Hours:  Monday – Friday,  9:00 AM – 5:00 PM

Operating at:  Sydney Southwest Private Hospital Liverpool  |  Campbelltown Public Hospital  |  Campbelltown Private Hospital  |  The George Hospital

Appointments available within 4-8 weeks depending on urgency  |  Book online 24/7  |  Medicare & Private Health Insurance Accepted

Thorough reflux assessment before surgery – because the right bariatric procedure depends on more than weight loss goals alone.

Read about more How Much Weight Will I Lose After Gastric Sleeve Surgery?

Read about more Gastric Sleeve vs Gastric Bypass: Which Surgery Is Right for You?

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