• Department of Emergency, The Second Affiliated Hospital of Guangxi Medical University, Nanning, 530007, P.R.China;
ZHANG Jianfeng, Email: zhangjianfeng930@163.com
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Objective To systematically review the association of body mass index (BMI) and mortality in chronic heart failure (CHF) pationts.Methods PubMed, EMbase, The Cochrane Library, CNKI, WanFang Data and VIP databases were electronically searched to collect cohort studies about the association of BMI and mortality in CHF patients from inception to June, 2019. Two reviewers independently screened literature, extracted data and assessed the risk of bias of included studies, then, meta-analysis was performed by using Stata 12.0 software.Results A total of 20 cohort studies involving 91 572 CHF patients were included. The results of meta-analysis showed that, compared to patients with normal weight, underweight individuals were associated with higher mortality (HR=1.48, 95%CI 1.36 to 1.62, P<0.001), whereas overweight (HR=0.86, 95%CI 0.78 to 0.94, P=0.002) and obese (HR=0.78, 95%CI 0.68 to 0.90, P=0.001) patients were associated with lower mortality.Conclusion Current evidence shows that underweight is associated with a higher risk of all-cause mortality among patients with CHF, whereas overweight and obese are associated with lower risk of all-cause mortality. Due to limited quality and quantity of the included studies, more high-quality studies are required to verify above conclusions.

Citation: ZHU Jieyun, WANG Xiaoling, ZHONG Zhimei, ZHANG Jianfeng. Association of body mass index and mortality in chronic heart failure: a meta-analysis. Chinese Journal of Evidence-Based Medicine, 2020, 20(2): 144-151. doi: 10.7507/1672-2531.201909049 Copy

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