Objective To evaluate the diagnostic value of ECG P wave/P-R segment ratio and E/A ratio of mitral flow spectrum for abnormal left ventricle diastolic function (LVDF).

• 目的评价心电图P波/P-R段比值和二尖瓣血流频谱E/A比值诊断左室舒张功能(LVDF)异常的价值。