Left atrial fractional area change ( FAC) and fractional volume change ( FVC) during atrial systole were calculated. 并与左房收缩时左房面积改变分数(FAC)和容积改变分数(FVC)作相关性研究。
DV Doppler waveform of this dextrocardia fetus showed a nearly ab-sent atrial systole wave. 右位心胎儿DV多普勒血流波形的心房收缩波近缺失。