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Paper Information

Journal:   THE JOURNAL OF TEHRAN UNIVERSITY HEART CENTER   2009 , Volume 4 , Number 1; Page(s) 35 To 38.
 
Paper: 

RELATIONSHIP BETWEEN BLOOD TRANSFUSION AND INCREASED RISK OF ATRIAL FIBRILLATION AFTER CORONARY ARTERY BYPASS GRAFT SURGERY

 
 
Author(s):  RADMEHR H.*, BAKHSHANDEH A.R., SALEHI MEHRDAD, HAJIAN P., NASR A.R.
 
* TEHRAN UNIVERSITY OF MEDICAL SCIENCES, IMAM KHOMEINI HOSPITAL COMPLEX, KESHAVARZ BEULEVARD, TEHRAN, IRAN
 
Abstract: 

Background: 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.
Methods: 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. Results: 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<0.001). Blood transfusion was performed in 487 patients and was associated with a significant increase in new-onset of AF (45.9% vs. 37.9%; P<0.01).
Conclusion: Homologous blood transfusion can increase the incidence of new-onset AF after CABG. This factor should be considered in identifying patients who might benefit from prophylaxis in order to prevent this common post-operative complication and the adverse consequences thereof.

 
Keyword(s): BLOOD TRANSFUSION, ATRIAL FIBRILLATION, RISK, CORONARY ARTERY BYPASS
 
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