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Relationship between Blood Transfusion and Increased Risk of Atrial Fibrillation after Coronary Artery Bypass Graft Surgery

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Author(s): Hassan Radmehr | Ali Reza Bakhshandeh | Mehrdad Salehi | Pouran Hajian | Ahmad Reza Nasr

Journal: Journal of Tehran University Heart Center
ISSN 1735-8620

Volume: 4;
Issue: 1;
Start page: 35;
Date: 2009;
Original page

Keywords: Blood transfusion | Atrial fibrillation | Risk | Coronary artery bypass

ABSTRACT
"nBackground: New-onset atrial fibrillation (AF) after cardiac surgery contributes to increased morbidity, hospital length of stay, and resource utilization. Although many aspects of AF after cardiac surgery have already been elucidated, the mechanism by which cardiac surgery predisposes patients to AF has hitherto remained unknown. Recent evidence supports the notion that blood transfusion enhances the inflammatory response, thereby increasing the incidence of post-operative AF. "nMethods: This retrospective study was conducted on 2095 patients who underwent coronary artery bypass grafting (CABG) alone or accompanied by valve surgery between January 2005 and July 2007. Variables associated with the development of new-onset AF were identified using logistic regression. "nResults: Intensive care unit blood transfusion increased the risk of AF (odds ratio per unit transfused, 1.16; 95% confidence limits, 1.14, 1.24; P
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