Atrial fibrillation and obesity-results of a meta-analysis

Nikolas Wanahita, Franz H. Messerli, Sripal Bangalore, Apoor S. Gami, Virend Somers, Jonathan S. Steinberg

Research output: Contribution to journalArticle

261 Citations (Scopus)

Abstract

Background: Obesity has been shown to be associated with atrial enlargement and ventricular diastolic dysfunction, both of which are risk factors for atrial fibrillation (AF). However, the role of obesity as a risk factor for the development of AF is unknown. The study aims to evaluate the role of obesity as a risk factor for the development of AF. Methods: The MEDLINE/ PUBMED and Cochrane databases were searched for studies in human subjects published in English language between 1966 and May 2007. Studies were included in our analyses if they were population-based cohort or postcardiac surgery cohort and investigated the incidence of AF in relation to the body mass index (BMI) categories. Results: Of the 468 articles identified, 16 studies that enrolled a total of 123 249 individuals met the inclusion criteria. These 16 articles included 5 population-based cohort studies that enrolled 78 602 adult individuals from the United States and 3 European countries and 11 postcardiac surgery studies that enrolled 44 647 patients. Based on the population-based cohort studies, obese individuals have an associated 49% increased risk of developing AF compared to nonobese individuals (relative risk 1.49, 95% CI 1.36-1.64). The risk of AF increased in parallel with greater BMI in this cohort. In contrast, in the postcardiac surgery studies, obese individuals do not have an associated increased risk of developing AF compared to nonobese individuals (relative risk 1.02, 95% CI 0.99-1.06). Conclusions: Our findings demonstrate that obesity increased the risk of developing AF by 49% in the general population, and the risk escalated in parallel with increased BMI. Thus, AF evolves as yet another pathogenetic factor by which obesity may increase cardiovascular and cerebrovascular events.

Original languageEnglish (US)
Pages (from-to)310-315
Number of pages6
JournalAmerican Heart Journal
Volume155
Issue number2
DOIs
StatePublished - Feb 2008

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Atrial Fibrillation
Meta-Analysis
Obesity
Body Mass Index
Population
Cohort Studies
Ventricular Dysfunction
MEDLINE
Language
Databases
Incidence

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

Cite this

Wanahita, N., Messerli, F. H., Bangalore, S., Gami, A. S., Somers, V., & Steinberg, J. S. (2008). Atrial fibrillation and obesity-results of a meta-analysis. American Heart Journal, 155(2), 310-315. https://doi.org/10.1016/j.ahj.2007.10.004

Atrial fibrillation and obesity-results of a meta-analysis. / Wanahita, Nikolas; Messerli, Franz H.; Bangalore, Sripal; Gami, Apoor S.; Somers, Virend; Steinberg, Jonathan S.

In: American Heart Journal, Vol. 155, No. 2, 02.2008, p. 310-315.

Research output: Contribution to journalArticle

Wanahita, N, Messerli, FH, Bangalore, S, Gami, AS, Somers, V & Steinberg, JS 2008, 'Atrial fibrillation and obesity-results of a meta-analysis', American Heart Journal, vol. 155, no. 2, pp. 310-315. https://doi.org/10.1016/j.ahj.2007.10.004
Wanahita N, Messerli FH, Bangalore S, Gami AS, Somers V, Steinberg JS. Atrial fibrillation and obesity-results of a meta-analysis. American Heart Journal. 2008 Feb;155(2):310-315. https://doi.org/10.1016/j.ahj.2007.10.004
Wanahita, Nikolas ; Messerli, Franz H. ; Bangalore, Sripal ; Gami, Apoor S. ; Somers, Virend ; Steinberg, Jonathan S. / Atrial fibrillation and obesity-results of a meta-analysis. In: American Heart Journal. 2008 ; Vol. 155, No. 2. pp. 310-315.
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