Laparoscopic Mini Gastric Bypass Surgery

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Mini gastric bypass surgery is a newer effective weight loss procedure designed to help individuals struggling with obesity. It is a variation of the traditional gastric bypass surgery that focuses on achieving similar benefits with fewer complications, a faster recovery time, and a more straightforward surgical process.

This procedure offers significant benefits, including quick weight loss, improved control of type 2 diabetes, and a quicker recovery time compared to traditional gastric bypass. If you're looking for a minimally invasive option to start your weight loss journey, laparoscopic mini gastric bypass could be the right choice for you.

At our weight loss centre, mini gastric bypass surgery is performed by our skilled surgeon, Dr. Niruben Rajasagaram, ensuring personalised care, faster recovery, proven results, and ongoing support throughout your weight loss journey. Our experienced surgical team is committed to delivering safe, effective, and long-lasting outcomes, guiding you through every stage—from initial consultation to post-operative care.

What is Mini Gastric Bypass Surgery?

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Mini gastric bypass surgery, also known as a single loop gastric bypass, is a weight loss surgery that alters the digestive system to promote significant weight loss. The procedure involves creating a smaller stomach pouch and rerouting the small intestine to it, bypassing the rest of the stomach and a portion of the small intestine. Unlike traditional gastric bypass surgery (Roux-en-Y), mini gastric bypass only involves one anastomosis (connection between the stomach and small intestine) instead of two, making it a simpler and shorter procedure.

The surgery is performed using a laparoscopic technique by an experienced mini gastric bypass surgeon, making it minimally invasive with smaller incisions. This results in less pain and a quicker recovery, while also significantly lowering the risk of complications compared to traditional techniques.

Benefits of Single-Loop Gastric Bypass

weight loss. It can significantly improve your health, lifestyle, and overall well-being. Here are some of the benefits of mini gastric bypass surgery: 

Effective Weight Loss

  • Produces similar long-term weight loss results as traditional gastric bypass

  • Many patients lose 60–80% of their excess weight within the first 12–18 months

  • Helps with sustainable weight management over the long term

  • Reduces hunger by altering hunger-regulating hormones like ghrelin

Metabolic & Health Improvements

  • Significant improvement or remission of Type 2 Diabetes

  • Helps control high blood pressure and reduce cardiovascular risk

  • Reduces cholesterol and triglyceride levels

  • Lowers the risk of heart disease, stroke, and certain cancers

  • Can resolve or improve conditions like sleep apnoea, fatty liver disease, and polycystic ovary syndrome (PCOS)

  • Increases insulin sensitivity, which is especially beneficial for those with prediabetes or insulin resistance

Shorter Operation & Recovery

  • Generally completed within 60-90 minutes

  • Performed laparoscopically, leading to smaller incisions and less scarring

  • Lower risk of complications compared to Roux-en-Y gastric bypass

  • Shorter hospital stay and faster return to daily life

  • Less postoperative discomfort and fewer wound-related issues

Enhanced Quality of Life

  • Increased energy levels and the ability to be more physically active

  • Improved self-confidence and mental well-being

  • Reduction in joint pain and increased mobility

  • Improved fertility and menstrual health in women

  • Enhanced participation in social, family, and professional activities

Long-Term Lifestyle Benefits

  • Encourages better eating habits and a healthier approach to food.

  • Ongoing support helps patients stick to nutrition and exercise goals

  • May lower dependence on medications for conditions like diabetes, blood pressure, or cholesterol

  • Improved sleep quality, including reduction or resolution of sleep apnoea

  • Greater life expectancy and reduction in obesity-related mortality

Am I a Good Candidate for Mini Gastric Bypass Surgery?

Laparoscopic mini gastric bypass or gastrointestinal bypass may be an option for you if:

  • You have a BMI over 35 and are dealing with obesity-related health conditions like type 2 diabetes, high blood pressure, or sleep apnea.

  • You have previously undergone lap band or gastric balloon surgery in Melbourne, but did not achieve the desired results.

  • You struggle with portion control and find it difficult to maintain a healthy weight.

  • You are looking for faster recovery or lower surgical risks compared to other weight loss procedures.

The Mini Gastric Bypass Procedure: Step by Step

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Initial Evaluation
  • Comprehensive health screening and blood tests

  • Body Mass Index (BMI) and medical history review

  • Assessment of obesity-related conditions (e.g., diabetes, hypertension)

  • One-on-one consultation with the surgeon

  • Introduction to the weight loss team, including a dietitian and habits and transformation coach

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Pre-Surgery Preparation
  • Receive a personalised pre-operative diet plan

  • Begin liver-shrinking diet to prepare for surgery

  • Get medical clearance from a GP or specialist if needed

  • Final pre-op appointments and consent forms

  • Follow fasting instructions 12 hours before surgery

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Laparoscopic Surgery
  • General anaesthesia is administered for a pain-free procedure

  • Small incisions are made for laparoscopic instruments

  • A narrow, tube-shaped gastric pouch is created

  • Most of the stomach is bypassed, but left inside the body

  • Small intestine prepared for the bypass connection

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Intestinal Bypass
  • A loop of the small intestine is connected to the gastric pouch

  • Only one connection made (single anastomosis) for a simpler procedure

  • This allows food to bypass the upper part of the small intestine

  • Reduces calorie and nutrient absorption to aid weight loss

  • The procedure is usually completed within 45–60 minutes

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Hospital Recovery
  • Patient is monitored in the recovery ward post-surgery

  • Pain relief and fluids are administered through IV

  • Encouraged to walk within 12–24 hours for circulation

  • Clear fluid diet started under supervision

  • Discharge usually occurs within 1–2 days, depending on recovery

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Ongoing Aftercare
  • Diet progresses from liquids to purees, then soft and solid foods

  • Regular follow-ups with the surgeon and dietitian

  • Introduce vitamin and mineral supplements to prevent deficiencies

  • Emotional and lifestyle support is offered at our weight loss centre

  • Advise long-term weight maintenance and health tracking

Risks & Things to Know

While Mini Gastric Bypass is generally safe, there are some risks to consider:

  • Bile reflux: This occurs when bile from the small intestine flows backwards into the stomach, causing discomfort.

  • Nutritional deficiencies: Since part of the small intestine is bypassed, patients must take vitamin and mineral supplements to prevent deficiencies.

  • Regular follow-ups: It’s important to keep up with regular follow-up visits and adhere to dietary recommendations to maintain long-term health.

Begin Your Weight Loss Journey with Confidence

Mini Gastric Bypass Surgery offers a simpler, faster, and highly effective solution for long-term weight loss and improved health. Under the guidance of Dr. Niruben Rajasagaram, this minimally invasive procedure provides real results with fewer risks and a shorter recovery. With Dr. Niruben's experience, you can trust you're in capable hands every step of the way. Start your transformation today and take the first step towards a healthier, happier you.

Surgery Options

Please see below a list of some of the more common surgeries for Bariatric (Weight Loss), Upper Gastrointestinal (Hiatal Hernia & Anti Reflux) and General Surgery (Gall Bladder & Hernias) that Mr.Niruben currently performs.

Why Choose Dr Niruben for Mini Gastric Bypass in Melbourne?

When considering mini gastric bypass surgery in Melbourne, choosing the right surgeon can make all the difference.

Here’s why patients trust Dr Niruben Rajasagaram:

  • Over 10+ years of experience in general and bariatric surgery

  • Trusted by patients with ratings on Google and 100+ verified reviews on Doctify.

  • A strong track record of safe and successful outcomes

  • Specialises in minimally invasive procedures, reducing pain and downtime

  • Provides comprehensive aftercare, including support from dietitians and habits and transformation coach

Your journey doesn’t end with surgery—Dr Niruben and his team are committed to walking with you every step of the way.

Hear From Our Happy Patients

See how we have transformed patients to transform their lives. Our patients share their journeys, successes, and experiences with Dr. Niruben Rajasagaram. Read patient testimonials about how we’ve helped them achieve lasting weight loss and better health.

Frequently Asked Questions About Mini Gastric Bypass Surgery

    • How much weight can I lose after mini-gastric bypass surgery?

      Most patients lose around 60–75% of their excess weight within 12 to 18 months following the mini gastric bypass. Weight loss results depend on individual commitment to lifestyle changes, including diet and physical activity. Dr. Niruben provides structured support to help patients maintain long-term success.

    • Recovery typically takes 2–3 weeks, though this can vary. Most patients return to normal daily activities within this period, while full recovery and adjustment to dietary changes may take a few months. Dr. Niruben Rajasagaram’s team ensures personalised aftercare to support a smooth recovery.

    • The mini gastric bypass is a newer and less complex bypass surgery which involves one connection between the stomach and small intestine, whereas the Roux-en-Y involves two. This often leads toshorter surgery time, faster recovery, and lower risk/incidence of internal hernias. However, there is a slightly higher risk of bile refluxin the mini-bypass. Dr. Niruben helps patients choose the most suitable option based on their medical profile.

    • Yes, the procedure can be reversed, but it is rarely done and considered a permanent solution. Reversals are typically only considered in rare medical situations. Dr. Niruben thoroughly evaluates suitability before recommending the procedure.

    • Yes, in most cases, private health insurance (Gold Cover/TOP Cover) covers mini gastric bypass if deemed medically necessary. This typically requires evidence of obesity-related health conditions or failed weight loss attempts. Dr. Niruben's practice offers assistance with insurance queries and documentation.

    • Patients follow a phased diet, starting with liquids, then pureed foods, and progressing to soft solids. Long-term, a high-protein, low-sugar diet is essential. Dr. Niruben’s dietitian, Stefania Basso, provides meal plans and ongoing support.

    • Mini gastric bypass surgery can significantly improve or even resolve type 2 diabetes, high blood pressure, and other metabolic conditions. This is due to both weight loss and hormonal changes post-surgery. Dr. Niruben monitors each patient’s progress closely to ensure optimal outcomes.