METHODS: The measurement parameters included: peak velocities at rapid filling (VE) and atrial contraction (VA), the ratio E/A, deceleration rate of early diastolic rapid inflow (EDC) and E-F slope of mitral valve forelobe curve (EFV).

• 方法：以舒张早期快速充盈血流速度（VE）、舒张晚期心房收缩血流速度（VA）、二者比值（E/A）、舒张早期快速充盈减速度（EDC）及二尖瓣前叶EF斜率（EFV）为测量参数。