Is gastric sleeve surgery safe?

Gastric sleeve surgery is a commonly performed bariatric procedure carried out using established laparoscopic techniques. As with all surgical procedures, there are possible risks and complications. A thorough pre-operative assessment helps identify individual risk factors and inform the surgical plan.

What are the most common complications of gastric sleeve surgery?

Possible complications include bleeding, infection, blood clots, staple line leaks, and reflux. Serious complications are uncommon, and most patients recover without significant problems. Every patient's risk profile is individually assessed before surgery.

What is a gastric sleeve leak?

A staple line leak occurs when there is a gap or opening at the join created during the sleeve procedure. It is a rare but serious complication that requires prompt diagnosis and treatment. This can lead to patients having multiple surgeries and being in hospital for a prolonged time.

Can gastric sleeve surgery cause acid reflux?

Some patients may experience new or worsening acid reflux symptoms after gastric sleeve surgery. This is one of the factors assessed before surgery, as patients with significant pre-existing reflux may require careful consideration of the most appropriate procedure.

What are the long-term complications of gastric sleeve surgery?

Possible long-term considerations include vitamin and mineral deficiencies, acid reflux symptoms, and weight regain if lifestyle and dietary recommendations are not maintained. Regular follow-up, nutritional monitoring, and ongoing supplementation help reduce the risk of long-term complications.

How can complications be reduced?

Careful patient selection, thorough pre-operative assessment, experienced surgical technique, and structured post-operative follow-up all contribute to reducing the risk of complications. Following medical advice before and after surgery is one of the most important steps patients can take.

When should I contact my surgeon after gastric sleeve surgery?

Patients should contact Mr Niruben or seek urgent medical attention if they experience persistent fever, increasing abdominal pain, difficulty swallowing, persistent vomiting, chest pain, shortness of breath, wound site concerns, signs of dehydration, or a rapid heart rate. Early assessment and prompt attention to concerning symptoms is always the right approach.

How does Mr Niruben minimise the risks of gastric sleeve surgery?

Mr Niruben Rajasagaram performs a comprehensive individual assessment before every procedure, reviews all relevant medical and surgical history, follows established laparoscopic techniques, completes safety checks during surgery, provides continuous monitoring throughout the hospital stay, and offers structured long-term follow-up care after discharge.

Gastric Sleeve Complications

Understanding the Risks and Complications of Gastric Sleeve Surgery

Every surgical procedure carries some level of risk. Gastric sleeve surgery is a commonly performed bariatric procedure carried out using established laparoscopic techniques, and most patients recover without experiencing serious complications. At the same time, patients deserve honest, balanced information to support informed decision-making.

Mr. Niruben Rajasagaram is a Consultant Bariatric, Upper Gastrointestinal, and General Surgeon with over 14 years of surgical experience, including a four-year fellowship in bariatric and upper gastrointestinal surgery. He consults at clinics in Wantirna, Frankston, and Berwick.

Before any patient proceeds with gastric sleeve surgery, a thorough pre-operative assessment is completed to identify individual risk factors. Patient safety is prioritised before, during, and after surgery, and following medical advice throughout the process helps reduce the likelihood of complications. Mr. Niruben provides personalised recommendations based on each patient's overall health, medical history, and individual circumstances.

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Possible Risks and Complications of Gastric Sleeve Surgery

The following table outlines the possible risks and complications patients should be aware of when considering gastric sleeve surgery. Most patients do not experience serious complications, but understanding these risks is an important part of informed consent.

Possible Risk	Description
Bleeding	May occur during or after surgery. The surgical team monitors closely and takes appropriate steps if needed.
Infection	Can develop around incision sites or internally. Managed with appropriate medical treatment.
Staple Line Leak	A rare but serious complication requiring prompt diagnosis and treatment. Leak testing is performed during surgery.
Blood Clots	Risk is reduced through early mobilisation, compression stockings, and preventive medication where appropriate.
Anaesthetic Risks	Risks associated with general anaesthesia, which are assessed before surgery based on individual health factors.
Narrowing (Stricture)	A narrowing of the sleeve may affect the passage of food in some patients and may require further management.
Acid Reflux	Some patients may experience new or worsening reflux symptoms after gastric sleeve surgery. This is assessed before proceeding.
Vitamin and Mineral Deficiencies	Reduced food intake makes long-term nutritional monitoring and supplementation important after surgery.

Common Discomfort After Gastric Sleeve Surgery

It is important to understand the difference between expected recovery symptoms and complications requiring medical attention. Some discomfort and side effects are a normal part of the healing process in the days and weeks following surgery.

Pain

Mild discomfort around the incision sites is common during the early recovery period. Pain management is provided during the hospital stay and, where required, after discharge.

Nausea

Temporary nausea may occur as the stomach heals and patients adjust to the dietary changes required after surgery. This generally improves as recovery progresses.

Fatigue

Reduced calorie intake during the early stages of recovery and the physical demands of healing may contribute to temporary tiredness. Adequate rest is an important part of early recovery.

Shoulder Pain

The carbon dioxide gas used during laparoscopic surgery may cause temporary shoulder or upper back discomfort in some patients. This typically resolves within a few days.

Changes in Eating Habits

Patients gradually adapt to eating significantly smaller meals after surgery. Early food tolerance can vary, and adjusting to new portion sizes takes time and practice.

Temporary Constipation

Reduced food intake, changes in fluid consumption, and some medications used during recovery may contribute to temporary constipation. Staying hydrated and following dietary guidance helps manage this.

These symptoms are generally part of the normal recovery process rather than signs of a complication. If any symptom is severe, persisting, or causing concern, patients should contact Mr. Niruben Rajasagaram or seek appropriate medical advice promptly.

Comprehensive Health Assessment

BMI and Medical History Review

Pre-operative Testing

Experienced Laparoscopic Technique

Patient Safety Protocols

Blood Clot Prevention

Leak Testing During Surgery

Post-operative Monitoring

Dietitian Support

Long-Term Follow-up

Patient Safety Comes First

Every patient who proceeds with gastric sleeve surgery under Mr Niruben Rajasagaram's care receives a detailed individual assessment before the procedure is planned. Existing medical conditions, current medications, previous surgical history and individual risk factors are all reviewed as part of this process.

Surgery is performed using established laparoscopic techniques. Leak testing and comprehensive safety checks are completed during the procedure before incisions are closed. Patients receive continuous monitoring throughout their hospital stay, and Mr Niruben and the team provide structured follow-up care to support a safe and well-managed recovery.

Where appropriate, patients may also receive ongoing support from Bariatric Dietitian Ms Stefania Basso for nutritional monitoring and dietary guidance after surgery, and from Habits and Transformation Coach Dr Monica Devanand for lifestyle and behavioural support during recovery and long-term weight management.

Your safety remains our priority throughout every stage of your weight loss surgery journey.

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When Should You Seek Medical Attention After Surgery?

Most patients recover from gastric sleeve surgery without serious complications. However, patients should contact Mr Niruben or seek urgent medical attention promptly if they experience any of the following after their procedure:

Persistent or rising fever
Increasing abdominal pain that does not settle
Difficulty swallowing or inability to keep fluids down
Persistent vomiting
Chest pain or tightness
Shortness of breath
Redness, swelling, or discharge from wound sites
Signs of severe dehydration, including dizziness, dark urine, or inability to maintain fluid intake
Rapid or irregular heart rate

Early assessment helps identify and manage potential complications promptly. Patients should not wait to see if symptoms resolve on their own; if they are concerned, contacting the surgical team is always the appropriate step.

Long-Term Considerations After Gastric Sleeve Surgery

Long-term success after gastric sleeve surgery depends on ongoing engagement with follow-up care and healthy lifestyle habits. Surgery creates the conditions for significant weight loss, but maintaining those results requires consistent effort over time.

Long-term care after gastric sleeve surgery typically includes:

Regular follow-up appointments with Mr Niruben to monitor recovery and long-term progress
Vitamin and mineral supplementation to address the reduced food intake following surgery
Routine blood tests to monitor nutritional status and identify any deficiencies early
Maintaining healthy eating habits and appropriate portion sizes
Regular physical activity, progressed according to recovery and individual capacity
Ongoing weight monitoring
Managing reflux symptoms if they occur or worsen after surgery
Long-term nutritional support from Ms Stefania Basso where required

Consistent follow-up and engagement with the care team play an important role in reducing long-term complications and supporting sustained outcomes.

Have Questions About the Risks of Gastric Sleeve Surgery?

Understanding the potential risks and complications of gastric sleeve surgery is an essential part of making an informed decision. During a consultation, Mr Niruben Rajasagaram explains the benefits, the possible complications, and the individual risk factors relevant to each patient's health history, giving patients the information they need to make a well-considered decision.