房颤(AF)为冠状动脉搭桥术(CABG)后常见的并发症。尽管心脏外科术后AF发生较普遍,但其病理生理学机制仍未完全阐明。作者先前的研究表明,年龄及左房扩大为术后发生AF的独立预测因素。因此,本研究试图确定在术后发生AF的患者中是否发生细胞特性改变,如心肌纤维化和(或)心肌细胞肥大。对行择期CABG术的患者在心房切开时获取右心耳组织。 Atrial fibrillation (AF) is a common complication after coronary artery bypass surgery (CABG). Although AF occurs more frequently after cardiac surgery, its pathophysiological mechanisms have not yet been fully elucidated. Previous studies by the authors show that age and left atrial enlargement are independent predictors of postoperative AF. Therefore, this study sought to determine whether changes in cellular properties, such as myocardial fibrosis and / or cardiomyocyte hypertrophy, occurred in patients who developed AF after surgery. Right atrial appendage was obtained at the time of atrial dissection in patients undergoing elective CABG.