Lynda J Ross1,2, Siobhan Wallin3, Emma J Osland3,4, Muhammed Ashraf Memon5,6,7,8,9. 1. Department of Nutrition and Dietetics, Royal Brisbane & Women's Hospital, Brisbane, QLD, Australia. lynda.ross@griffith.edu.au. 2. Menzies Health Institute Queensland, Griffith University, Gold Coast campus, Southport, QLD, Australia. lynda.ross@griffith.edu.au. 3. Department of Nutrition and Dietetics, Royal Brisbane & Women's Hospital, Brisbane, QLD, Australia. 4. School of Human Movement and Nutrition Sciences, University of Queensland, Brisbane, QLD, Australia. 5. Sunnybank Obesity Centre and South East Queensland Surgery (SEQS), Sunnybank, QLD, Australia. 6. Mayne Medical School, School of Medicine, University of Queensland, Brisbane, QLD, Australia. 7. Faculty of Health Sciences and Medicine, Bond University, Gold Coast, QLD, Australia. 8. Faculty of Health Sciences, Mathematics and Computing, Australian Centre for Sustainable Catchments, University of Southern Queensland, Toowoomba, QLD, Australia. 9. Faculty of Health Science, Bolton University, Bolton, Lancashire, UK.
Abstract
BACKGROUND: This systematic review assessed feasibility and effectiveness of preoperative meal replacements to improve surgical outcomes for obese patients. METHODS: PRISMA guidelines were followed and electronic databases searched for articles between January 1990 and March 2015. RESULTS: Fifteen studies (942 participants including 351 controls) were included, 13 studies (n = 750) in bariatric patients. Adverse effects and dropout rates were minimal. Ten out of 14 studies achieved 5-10 % total weight loss. Six of six studies reporting liver volume achieved 10 % reduction. Endpoints for perioperative risks and outcomes were too varied to support definitive risk benefit. CONCLUSIONS: Commercial meal replacements are feasible, have minimal side effects and facilitate weight loss and liver shrinkage in free-living obese patients awaiting elective surgery. A reduction in surgical risk is unclear.
BACKGROUND: This systematic review assessed feasibility and effectiveness of preoperative meal replacements to improve surgical outcomes for obesepatients. METHODS: PRISMA guidelines were followed and electronic databases searched for articles between January 1990 and March 2015. RESULTS: Fifteen studies (942 participants including 351 controls) were included, 13 studies (n = 750) in bariatric patients. Adverse effects and dropout rates were minimal. Ten out of 14 studies achieved 5-10 % total weight loss. Six of six studies reporting liver volume achieved 10 % reduction. Endpoints for perioperative risks and outcomes were too varied to support definitive risk benefit. CONCLUSIONS: Commercial meal replacements are feasible, have minimal side effects and facilitate weight loss and liver shrinkage in free-living obesepatients awaiting elective surgery. A reduction in surgical risk is unclear.
Entities:
Keywords:
Meal replacements; Preoperative weight loss; Surgical outcomes; Very low energy diet
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