Analysis of risk factors of atrial fibrillation following coronary artery bypass grafting

Objective To analyze risk factors of atrial fibrillation(AF) following coronary artery bypass grafting (CABG) . Methods Four hundred and one patients with CABG were reviewed and divided into AF group and non-AF group on the basis of whether AF occurred after operation (within l week) . Statistical analysis was used to screen for risk factors of AF following CABG. Results The rate of AF was 27. 93% (114 /401) . Univariate analysis showed that age,a history of AF,left atrial diameter,early postoperative withdrawal of β-blockers,grafting number were more than those in non-AF group, while EF value was lower than that in non-AF group(P 0. 05) . Multivariate logistic regression analysis showed that age,a history of AF,left atrial enlargement,lower EF and early postoperative withdrawal of β-blockers were independent risk factors of AF following CABG. The preoperative hs-CRP level of AF group was significantly higher than that in non-AF group(7. 11 ± 6. 20 mg / L vs 5. 17 ± 8. 22 mg / L,P = 0. 026) . Conclusions Advanced age,a history of AF,left atrial enlargement,lower EF and early postoperative withdrawal of β-blockers are independent risk factors of AF following CABG. Inflammation may be involved in the development of postoperative AF.[Chinese Journal of Cardiac Pacing and Electrophysiology,2013,27(2) : 122 - 125]