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- Title
Body Composition Changes Following a Very-Low-Calorie Pre-Operative Diet in Patients Undergoing Bariatric Surgery.
- Authors
Sivakumar, Jonathan; Chong, Lynn; Ward, Salena; Sutherland, Tom R; Read, Matthew; Hii, Michael W
- Abstract
Background: Fatty liver in obese patients increases the technical difficulty of bariatric surgery. Pre-operative weight loss with a very-low-calorie diet (VLCD) is commonly used to facilitate surgery. Few studies have quantified the systemic effect of rapid pre-operative weight loss on body composition. The objective of this study is to evaluate body composition changes in bariatric surgery patients undergoing a VLCD. Methods: Body composition assessments were performed between August 2017 and January 2019 using dual-energy X-ray absorptiometry immediately before and after a 2-week VLCD at St Vincent's Hospital Melbourne. Data collected prospectively pre- and post-VLCD included total body weight, excess body weight, body mass index (BMI), lean body mass (LBM), fat mass (FM) and bone mineral content (BMC). The pre- and post-operative results were compared. Results: Forty-four patients completed both the 2-week VLCD and body composition assessments. Following a 2-week VLCD, patients lost a mean of 4.5 kg (range − 0.3 to 9.5) in a total body weight and 8.8% (range − 0.9 to 17.1) of excess body weight, with a mean reduction in body mass index of 1.6 kg/m2 (range − 0.2 to 3.1). Loss of LBM was 2.8 kg and was significantly greater than loss of FM, 1.7 kg (p < 0.05). BMC changes were insignificant. Conclusion: A VLCD is an effective tool for pre-operative weight reduction. In this cohort, a large amount of the total weight loss was attributed to a loss of lean body mass. The impact of significant lean body mass loss and its relationship to short- and long-term health outcomes warrants further assessment.
- Subjects
SAINT Vincent; BODY composition; LEAN body mass; DUAL-energy X-ray absorptiometry; BODY mass index; BARIATRIC surgery; REDUCING diets
- Publication
Obesity Surgery, 2020, Vol 30, Issue 1, p119
- ISSN
0960-8923
- Publication type
Article
- DOI
10.1007/s11695-019-04174-y