Results:The patients were assigned to two groups according to E/A ratio or deceleration time (DT),or both:restrictive filling (RF) group and nonrestrictive filling (NRF) group.

• 结果:按照二尖瓣舒张早期最大血流速度(E)与舒张晚期最大血流速度(A)的比值(E/A)和E波减速时间(DT)将病例组分为RF组和NRF组。