Weight Loss Surgery Information


Sleeve Gastrectomy Facts From Our Clinic

  • Dr Hehir has performed over 490 sleeve gastrectomies.
  • average weight lost is 75% of their excess weight by 1 year.
  • 15% of our patients have lost 90% or more of their excess weight
  • Rate of complications is low, similar to a gall bladder operation.
  • Dr Hehir’s results show a lower than the national average for complications
  • 15% of patients have previously had a lap band with similar outcomes
  • Dr Hehir is a member of ANZMOSS (ANZ Metabolic and Obesity Surgery Society)
  • All operations are tracked through the National Bariatric Registry
  • Very low reoperation rates
  • 3% required a gastroscopy post surgery within 12 months
  • 1% required a blood transfusion but recovered fully.
  • Main problems are reflux (usually managed with medications), gastric leak and weight regain due to enlarged stomach, and Vitamin B12 deficiency

Reasons for weight loss surgery

  • quality of life (workplace and social)
  • sleep apnoea
  • diabetes
  • musculo-skeletal
  • stroke
  • bowel and breast cancer
  • fertility especially polycystic ovary syndrome
  • cardiac disease
  • work place and social discrimination
  • body image
  • medical issues


  • follow up locally
  • very competitive results


  • skin
  • gall bladder
  • hair loss

Criteria for patient selection

  • any of the above reasons
  • BMI of 32 or above
  • generally aged between 20 and 70 depending on individual assessment
  • the operation cannot be performed in the local Public system so patients need to be financial.
  • please contact us on 44235507 for a quote


One Anastomosis Gastric Bypass – mini gastric bypass

  • Introduced January 2019 for patients less likely to do well with sleeve gastrectomy (i.e. high BMI, age > 50 years, diabetes, revisions)
  • Now offered to almost all
  • Well tolerated
  • Over 150 patients
  • Excess weight loss at one year over 66%, but patients generally older
  • Bigger patients having one anastomosis gastric bypass
  • 1% early reoperation in 1st week
  • 5% need endoscopy in 3 months
  • Combined band removal and one anastomosis gastric bypass were associated with 2 early reoperations

Political Problems

  • Nutritional – manageable with supplements
  • Variation sugars with high protein diet
  • Ulcers – need medication for 6 weeks or more
  • Need for gastric dilation


Very occasionally, Dr. Hehir will recommend an operation he does not perform, and you will be referred elsewhere.


Click here for Sleeve Gastrectomy Information


22 Shoalhaven St

Tel: (02) 4423 5507
Fax: (02) 4422 8003