211299 Analysis of risk factors for left atrial thrombosis in patients with rheumatic mitral stenosis

/Hao Xinghai(郝興海，Dept Cardiac Surg，Anzhen Hosp，Cap Med Univ，Beijing 100029)…∥Chin J Thorac Surg.-2011，27(5).-293 ～296

ObjectiveTo analyse the risk factors for left atrial thrombosis in patients with rheumatic mitral stenosis.MethodsFrom January 2001 to December 2008，2277 patients with rheumatic mitral stenosis underwent operations in our hospital.There were 737 males and 1540 females，the age ranged from 19 to 84 years［average(50.9 ±10.2)years］.Left atrial thrombosis group(554 cases)and no thrombosis(1723 cases)were divided，retrospectively collected data were analyzed with univariate and multivariate Logistic regression.Results12 variables，including age，mitral valve orifice area，left atrial diameter，left ventricular diastole diameter，CRP，gender，degree of mitral stenosis，or regurgitation，degree of tricuspid regurgitation，degree of pulmonary hypertension，atrial fibrillation and heart function had statistic difference between two groups.With multivariate Logistic regression for these 12 factors，age，mitral valve orifice area，left atrial diameter，degree of mitral regurgitation and atrial fibrillation were found to be the affecting factors for left atrial thrombosis in patients with rheumatic mitral stenosis.ConclusionFor patients with rheumatic mitral stenosis，age，mitral valve orifice area，left atrial diameter and atrial fibrillation are the risk factors for left atrial thrombosis.12 refs，4 tabs.