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目的已有实验证明,左心室充盈的多普勒指标既与年龄相关。又与心率相关。本项研究测定了心率和年龄对多普勒超声心动图的影响之间的相互作用,旨在探讨心率对左心室充盈的影响是否因年龄不同而异。
Objectives Experiments have shown that left ventricular filling Doppler indicators are age-related. Also related to heart rate. This study examined the interaction between heart rate and age on Doppler echocardiography and aims to investigate whether the effect of heart rate on left ventricular filling varies with age.