Title

Commercial very low energy meal replacements for preoperative weight loss in obese patients: A systematic review

Date of this Version

4-12-2016

Document Type

Journal Article

Publication Details

Citation only

Ross, L. J., Wallin, S., Osland, E. J., & Memon, M. A. (2016). Commercial very low energy meal replacements for preoperative weight loss in obese patients: A systematic review. Obesity Surgery, 26(6), 1343-1351.

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© Copyright, 2016, Springer Science+Business Media New York.

ISSN

0960-8923

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

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This document has been peer reviewed.