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Investigating the feasibility of implementing a pre-operative VLCD weight loss program into the pre-operative model of care for general elective surgery patients

Investigating the feasibility of implementing a pre-operative VLCD weight loss program into the pre-operative model of care for general elective surgery patients

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12616001569493
Enrollment
28
Registered
2016-11-14
Start date
2017-06-01
Completion date
2018-02-28
Last updated
2020-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

This pilot study will investigate the feasibility of implementing a multidisciplinary pre-operative very low calorie (VLCD) weight loss program in adult obese patients awaiting general elective surgery. This study will initially enrol a pilot sample of 50 patients who have a Body mass Index (BMI) equal to or over 30kg/m2 who attend the Pre-admission clinic for elective general surgery at The Prince Charles Hospital. Participants will be randomised into a control group or an intervention group. Participants in the intervention group will follow an 8 week very low calorie diet that incorporates Optifast meal replacement shakes. Participants randomised to the control group will receive standard care that includes a generic weight loss information pack provided by the clinic nurse. Measures to assess health related quality of life, body composition and adherence to the program will be collected. Unfavourable surgical outcomes will be measured until 30 days post elective surgery.

Interventions

The intervention is an 8 week Very Low Calorie Diet weight loss program that utlises Optifast meal replacement shakes to 700-800calories/ day intake. This will be achieved through the daily oral consumption of 3-4 Optifast products (shakes) with an additional 2 cups (non-starch) salad, at least 2 litres of calorie free fluids, and 1 teaspoon of oil. Processes established to measure fidelity / adherence to treatment protocols will be implemented which may include but not limited to urinary ketone

The intervention is an 8 week Very Low Calorie Diet weight loss program that utlises Optifast meal replacement shakes to 700-800calories/ day intake. This will be achieved through the daily oral consumption of 3-4 Optifast products (shakes) with an additional 2 cups (non-starch) salad, at least 2 litres of calorie free fluids, and 1 teaspoon of oil. Processes established to measure fidelity / adherence to treatment protocols will be implemented which may include but not limited to urinary ketones. Urinary ketones will be collected by the clinic nurse.

Sponsors

Department of Surgery and Department of Nutrition and Dietetics, The Prince Charles Hospital
Lead SponsorHospital

Study design

Allocation
Randomised controlled trial
Intervention model
Parallel
Primary purpose
Treatment
Masking
Open (masking not used)

Eligibility

Sex/Gender
All
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

Elective general surgical patients at The Prince Charles Hospital BMI >30kgm2 >18 years old eGFR >60ml/min/1.73m2

Exclusion criteria

Pregnant, preparing undergoing IVF Cirrhosis, liver failure, portal hypertension Acute cardiovascular disease Type 1 Diabetes Mellitus Use lithium long-term use of corticosteroids (> 2 weeks duration) People with an intellectual or mental impairment

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026