Objective:To investigate if atrial fibrillation ( AF) is an independent risk factor for tricus-pid regurgitation(TR) after left-sided heart valve surgery. Methods;374 cases were followed-up from March 2002 to November 2008 with aortic valve replacement or mitral valve replacement without tricuspid repaire or tricuspid valve replacement 151 male,223 female,23-79years old,mean age of (52 ± 11) years. All patients underwent preoperative and postoperative color Doppler echocardiography and electrocardiogram ( ECG). Uni-variate analysis between groups using the χ2 test. Using logistic regression model for risk factors analysis. Results ; Postoperative AF is an independent risk factor for TR. Logistic multivariate analysis results reveal that: Postoperative AF, female gender, left atrial enlargement were independent risk factors for TR; age, size of left ventricular and right ventricular, ejection fraction of left ventricular after surgery were not risk factors for TR. Conclusion; AF after Left-sided heart valve surgery is an independent risk factor for TR. So it is important to notice that, postoperative AF should be treated actively.%目的:研究左心瓣膜术后三尖瓣反流与术后心房颤动(房颤)的关系.方法:随访2002年3月至2008年11月接受主动脉瓣置换术或二尖瓣置换术,且未行三尖瓣成形术或三尖瓣置换术的患者374例,其中男性151例,女性223例,年龄23～79岁,平均(52±11)岁.所有患者均经过术前和术后彩色多普勒超声心动检查及心电图检查.单因素分析组间使用x2检验.危险因素采用Logistic回归模型分析.结果:左心瓣膜术后房颤是术后发生三尖瓣反流的独立危险因素.Logistic多因素分析结果为:术后房颤、女性及术后左心房扩大,是术后三尖瓣反流的独立危险因素；术时年龄、术后左心室大小、术后右心室大小及术后射血分数这4项不是三尖瓣反流的危险因素.结论:左心瓣膜术后房颤是术后发生三尖瓣反流的独立危险因素.对于术后房颤应该引起重视,积极治疗.
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