Erschienen in:
12.04.2016 | Review
Commercial Very Low Energy Meal Replacements for Preoperative Weight Loss in Obese Patients: a Systematic Review
verfasst von:
Lynda J. Ross, Siobhan Wallin, Emma J. Osland, Muhammed Ashraf Memon
Erschienen in:
Obesity Surgery
|
Ausgabe 6/2016
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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.