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Sleeve Gastrectomy
A sleeve gastrectomy is one of the most commonly performed bariatric procedures worldwide and can be an effective treatment option for people living with obesity and weight-related health conditions. At Intus Dunedin, sleeve gastrectomy forms part of our comprehensive bariatric and weight management service, where surgery is considered alongside medical management, nutrition, psychology, and lifestyle support to help patients achieve sustainable, long-term health improvements.
A sleeve gastrectomy may be suitable for people who have been unable to achieve long-term weight loss through diet, exercise, or medical treatment alone.
It may be considered for people who:
Have obesity affecting their health or quality of life
Have obesity-related conditions such as Type 2 diabetes, sleep apnoea, high blood pressure or joint pain
Have struggled with repeated weight loss and regain
Are committed to making long-term lifestyle changes following surgery
Have undergone a comprehensive assessment by our bariatric team
Rather than simply reducing weight, a sleeve gastrectomy aims to improve overall health, mobility, quality of life, and obesity-related medical conditions.
Every patient is different, which is why surgery is only recommended after careful assessment by our multidisciplinary team.
What's Involved in a Sleeve Gastrectomy?
A sleeve gastrectomy is performed laparoscopically (keyhole surgery) under general anaesthetic.
During the procedure, approximately 75–80% of the stomach is removed, leaving a narrow sleeve-shaped stomach. This reduces the amount of food the stomach can comfortably hold and also changes the production of hormones involved in appetite and fullness, helping many patients feel satisfied with smaller meals.
Most patients stay in hospital for one to two nights before returning home.
Before your procedure
Before surgery, you'll undergo a comprehensive assessment with the Intus bariatric team, which may include:
Medical assessment
Bariatric nurse consultation
Nutrition assessment
Psychology support where appropriate
Pre-operative investigations
A short pre-operative diet to prepare the liver for surgery
We'll explain every stage of the process and ensure you're fully prepared before your operation.
After your procedure
Recovery continues well beyond surgery.
Patients receive ongoing support from the Intus multidisciplinary team, including:
Regular surgical follow-up
Nutrition advice as food intake progresses
Monitoring of vitamin and mineral requirements
Lifestyle support
Long-term follow-up to support sustainable weight management
Surgery is one part of your journey, with ongoing support helping you achieve lasting health outcomes.
Find A Specialist
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Dr Nigel Rajaretnam
Upper GI, Bariatric, Endocrine & General Surgeon
