Methods 85 patients suspect coronary heart disease, with echocardiography, the peak flow velocities during early diastole (E), atrial contraction (A), E/A ratio were recorded and calculated.

• 方法85例临床疑诊冠心病超声检查左心室二尖瓣口舒张早、晚期血流充盈速度E、A两峰峰值,计算E/A比值,其结果分为舒张功能正常和降低两组。