Single Anastomosis Gastric Bypass

The single anastomosis gastric bypass, also called the omega loop or mini bypass, involves creating a small gastric pouch by dividing the stomach. Subsequently, a loop of the small bowel is bypassed and reconnected to the lower section of this newly formed gastric pouch. This procedure is effective for weight loss as it is both restrictive and malabsorptive.

Why consider a single anastomosis gastric bypass & key considerations:

Dr Harald Puhalla Examining Limbs For Surgery
Dr Puhalla Using Tab
Dr Harald Puhalla Explaing Weight Loss Procedure
Changes to overall metabolic health
Minimally invasive surgical technique
Effectively treats chronic disease conditions such as high blood pressure, type 2 diabetes (high blood sugar) and high cholesterol
Can help to improve fertility in both females and males
Improve mental health, quality of life and poor sleep
Have tried to lose weight through diet and exercise with poor results.

To determine if you are eligible for this procedure, please review the requirements below:

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How is a Single Anastomosis Gastric Bypass Performed?

01

Anesthesia and Laparoscopic Access

The patient is placed under general anesthesia. Several small incisions are made in the abdomen to allow for the insertion of laparoscopic instruments and a camera for visual guidance.

02

Creation of the Stomach Pouch

A long, narrow pouch is created from the upper part of the stomach using a surgical stapler. This smaller stomach restricts food intake and reduces hunger signals.

03

Measurement of the Bypass Length

The surgeon measures a section of the small intestine—usually about 150cm from the ligament of Treitz—where the bypass will be connected.

04

Loop Formation and Bypass

A loop of the measured small intestine is brought up and attached to the newly formed stomach pouch, creating a single connection (anastomosis). This allows food to bypass a significant portion of the stomach and the upper small intestine.

05

Leak Testing and Inspection

The new connection is tested for leaks and checked for proper blood flow. 

At the end of the operation an air leak test is performed with a gastroscope to ensure there is a  good seal and no perforation.

06

Closure and Recovery

The instruments are removed, and the incisions are closed. The patient is then taken to recovery for monitoring. Most patients remain in the hospital for 1 day post-surgery.

Single Anastomosis Bypass Package

Our all-inclusive comprehensive surgical package includes the tools and resources to kick start your health journey and provide you maximum support.

What is included

  • Initial & Pre-investigation Consultations
  • Progress Reviews with Dr Puhalla, 3, 6, 9 & 12 months.
  • Surgical & Assistant Surgeon’s Fee
  • Dietician Appointments, 7 x appointments pre and post surgery guidance
  • 2 year Fresh Start Coaching Program
  • Bariatric Starter Pack, includes:
    – 1 x Multivitamin Chew Bottle
    – 1 x Feel Good Collangen 500g
    – 1 x Portion Plate & Bowl
    – 1 x Not a Bariatric Cookbook
    – Product Samples
  • Access to our Bariatric Nurse for support

Not Included

  • Pre-operative investigations if required e.g gastroscopy, pathology and radiology tests
  • Psychologist appointments/assessment if required, referral will be provided
  • Anesthetic Fee
  • Hospital Fee/Private Health Excess
  • Additional surgical procedures e.g hiatus hernia repair or gallbladder removal

If an additional procedure is required this will be quoted at your pre investigation consultation.

Recovery, Aftercare & Follow Up

Patient in Hospital
Chiropractic Adjustment or Examination
Dr Puhalla Using Tab

Frequently Asked Questions

Haven’t answered all your inquiries? Below are some frequently asked questions that may provide you with the information you are looking for. If we haven’t responded to your query or concerns, please contact our friendly team at (07) 5667 9766 or via email at admin@weightlossoperation.com.au.

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