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Body mass index and mortality in heart failure: A meta-analysis

The American heart journal, 2008-07, Vol.156 (1), p.13-22 [Peer Reviewed Journal]

Mosby, Inc. ;2008 Mosby, Inc. ;2008 INIST-CNRS ;Copyright Elsevier Limited Jul 2008 ;ISSN: 0002-8703 ;EISSN: 1097-6744 ;DOI: 10.1016/j.ahj.2008.02.014 ;PMID: 18585492 ;CODEN: AHJOA2

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Title:
Body mass index and mortality in heart failure: A meta-analysis
Author: Oreopoulos, Antigone, MSc ; Padwal, Raj, MD, MSc ; Kalantar-Zadeh, Kamyar, MD, MPH, PhD ; Fonarow, Gregg C., MD, FACC ; Norris, Colleen M., PhD ; McAlister, Finlay A., MD, MSc
Subjects: Biological and medical sciences ; Body Mass Index ; Cardiology. Vascular system ; Cardiovascular ; Cause of Death ; Drug therapy ; Female ; Heart ; Heart attacks ; Heart Failure - mortality ; Heart failure, cardiogenic pulmonary edema, cardiac enlargement ; Humans ; Male ; Medical sciences ; Mortality ; Obesity ; Obesity - complications ; Prognosis ; Reference Values ; Risk Assessment ; Studies ; Survival Analysis
Is Part Of: The American heart journal, 2008-07, Vol.156 (1), p.13-22
Description: Background In patients with chronic heart failure (CHF), previous studies have reported reduced mortality rates in patients with increased body mass index (BMI). The potentially protective effect of increased BMI in CHF has been termed the obesity paradox or reverse epidemiology . This meta-analysis was conducted to examine the relationship between increased BMI and mortality in patients with CHF. Methods We searched the Cochrane Central Register of Controlled Trials, MEDLINE, EMBASE, Scopus, and Web of Science to identify studies with contemporaneous control groups (cohort, case-control, or randomized controlled trials) that examined the effect of obesity on all-cause and cardiovascular mortality. Two reviewers independently assessed studies for inclusion and performed data extraction. Results Nine observational studies met final inclusion criteria (total n = 28,209). Mean length of follow-up was 2.7 years. Compared to individuals without elevated BMI levels, both overweight (BMI ∼25.0-29.9 kg/m2 , RR 0.84, 95% CI 0.79-0.90) and obesity (BMI ∼≥30 kg/m2 , RR 0.67, 95% CI 0.62-0.73) were associated with lower all-cause mortality. Overweight (RR 0.81, 95% CI 0.72-0.92) and obesity (RR 0.60, 95% CI 0.53-0.69) were also associated with lower cardiovascular mortality. In a risk-adjusted sensitivity analysis, both obesity (adjusted HR 0.88, 95% CI 0.83-0.93) and overweight (adjusted HR 0.93, 95% CI 0.89-0.97) remained protective against mortality. Conclusions Overweight and obesity were associated with lower all-cause and cardiovascular mortality rates in patients with CHF and were not associated with increased mortality in any study. There is a need for prospective studies to elucidate mechanisms for this relationship.
Publisher: New York, NY: Mosby, Inc
Language: English
Identifier: ISSN: 0002-8703
EISSN: 1097-6744
DOI: 10.1016/j.ahj.2008.02.014
PMID: 18585492
CODEN: AHJOA2
Source: MEDLINE
ProQuest Central

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Body mass index and mortality in heart failure: A meta-analysis

Mosby, Inc. ;2008 Mosby, Inc. ;2008 INIST-CNRS ;Copyright Elsevier Limited Jul 2008 ;ISSN: 0002-8703 ;EISSN: 1097-6744 ;DOI: 10.1016/j.ahj.2008.02.014 ;PMID: 18585492 ;CODEN: AHJOA2

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