The Effects of Bariatric Surgery on Cardiac Structure and Function: a Systematic Review of Cardiac Imaging Outcomes

Obesity Surgery
Ravi AggarwalHutan Ashrafian

Abstract

Obesity is associated with cardiac dysfunction, atherosclerosis, and increased cardiovascular risk. It can be lead to obesity cardiomyopathy and severe heart failure, which in turn raise morbidity and mortality while carrying a negative impact on quality of life. There is increasing clinical and mechanistic evidence on the metabolic and weight loss effects of bariatric surgery on improving cardiac structure and function in obese patients. The objective of this study was to quantify the effects of bariatric surgery on cardiac structure and function by appraising cardiac imaging changes before and after metabolic operations. This is a comprehensive systematic review of studies reporting pre-operative and post-operative echocardiographic or magnetic resonance cardiac indices in obese patients undergoing bariatric surgery. Studies were quality scored, and data were meta-analyzed using random effects modeling. Bariatric surgery is associated with significant improvements in the weighted incidence of a number of cardiac indices including a decrease in left ventricular mass index (11.2%, 95% confidence intervals (CI) 8.2-14.1%), left ventricular end-diastolic volume (13.28 ml, 95% CI 5.22-21.34 ml), and left atrium diameter (1.967 mm,...Continue Reading

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