Patient Info

Anaesthesia and surgery, what you need to know

At Sydney Bariatric Clinic our comprehensive approach to the management of our patients is unique with the integral involvement of anesthetist, surgeon, physician, dietician, physiotherapist and allied staff that provides a safe, high quality service that ensures best clinical outcomes for our patients.

The Pre-Anaesthetic Clinic

Once our patients have made the life-changing decision to proceed with surgery, a pre-anaesthetic assessment will be organized with Dr John Leyden. This appointment is essential and will take place at our Westmead Clinic, 2-4 weeks prior to surgery.

The pre-anaesthetic assessment is critical to ensure all our patients are well prepared – physically and mentally for surgery and the post-operative period.

The essential goals and objectives of our pre-anaesthetic assessment are to establish a ‘doctor-patient’ relationship, develop an understanding of the co-existing medical conditions and their impact on anaesthetic delivery, formulate a management strategy (‘anaesthetic plan’) for the peri-operative care and obtaining informed consent for the anaesthetic plan.
The pre-anaesthetic asessement allows identification of those patients likely to need special post-operative care in a high dependency or intensive care unit.

Obesity is often associated with significant other medical conditions – high blood pressure, heart disease, endocrine disorders including diabetes and thyroid diseases, impaired kidney function, hepatomegaly (fatty livers) and impaired livers (hepatitis), lung disease and disordered breathing, sleep apnoea and decreased functional exercise capacity.
These conditions can have a significant impact on the practical conduct of anaesthesia and need to be investigated and managed pre-operatively to optimize our clinical outcomes and ensure the highest level of medical care.

At our pre-anaesthetic clinic assessment of our patients include:

  • History and physical examination
  • Comprehensive review of blood tests with attention to full blood count, kidney function, liver function, hormonal and nutritional derangements
  • ECG (electrocardiogram)
  • Chest x-ray and cardiac echocardiography (if indicated)
  • Basic lung function tests
  • Functional assessments – including cardiopulmonary exercise testing (CPET) and six minute walk test.
  • Assessment by our physiotherapists and a prehabilitation program developed

After the pre-operative assessment and review of the results of the relevant investigations, our patients are offered a clear explanation of the proposed plan of treatment and informed consent will be obtained.

As a result of Dr Leyden’s assessment, some patients may have their surgery delayed whilst we improve their medical conditions or improve their functional abilities through our pre-habilitation program. These interventions will result in significant improvements in the health of the patients, success of the surgery, minimization of potential complications and enhanced recovery.

Anaesthesia for Bariatric Surgery

On the day of surgery, an expert, and skilled team of nursing and medical staff in our modern and suitably equipped operating theatres manage our patients.
Our surgical team, at Sydney Bariatric Clinic, has a combined experience of more than 50 years in bariatric surgery that ensures optimal operating conditions and the capability to manage any situation that may arise.

The primary goals of general anaesthesia are to maintain the health and safety of our patients while providing amnesia, hypnosis (lack of awareness), analgesia (pain relief), and optimal surgical conditions.
The anaesthetic technique used for our bariatric patients has been developed over many years and is personalized to each patient to improve the transition from surgery to the recovery room and thereafter the post-surgical ward.

Recovery after Bariatric Surgery

At Sydney Bariatric Clinic we have incorporated Enhanced Recovery After Surgery (ERAS) pathways that integrate all of our multimodal perioperative interventions, which are designed to reduce physiological stress, facilitate early return of bodily function and minimize length of hospital stay.
These interventions include:

  • Fasting time for clear fluids to 2 hours prior to surgery (not applicable to patients with adjustable gastric bands in place)
  • Multimodal analgesia (pain relief)
  • Regular use of anti-emetics (anti-nausea), aperients (laxatives)
  • Early mobilization after surgery (at 4 hours) and physiotherapy
  • Strict incentive spirometry
  • Oral fluid day one post-operatively
  • Strict protocol based medical and nursing care

About Us

Combining a team approach to treatment and providing dietary and nutritional advice as well as personalised lifestyle training will result in the best results from weight-loss surgery.


Westmead Private Hospital

Suite 9, Specialist Centre

16-18 Mons Road

Westmead NSW 2145

Phone: +61 2 9687 7019

Fax: +61 2 9687 7138



VUE Building

Suite 3, Ground Floor

1 Centennial Drive, Park Central

Campbelltown NSW 2560

Phone: +61 2 9687 7019

Fax: +61 2 9687 7138



Lakeview Private Hospital

17-19 Solent Circuit

Norwest, NSW 2153

Phone: +61 2 9687 7019

Fax: +61 2 9687 7138



Cosmetic Culture

318 High Street

(Enter via 17 Higgins Street)

Penrith NSW 2750

Phone: +61 2 9687 7019

Fax: +61 2 9687 7138


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