Methods: The numerical simulation for controlling ventricular fibrillation in 2D cardiac excitable media was studied by spiral wave dynamics.
方法：利用旋波动力学的研究方法，对二维心脏系统施加周期驱动与有效驱动数值模拟心室颤动的控制和消除。
The variation of R wave amplitude has little relation with cardiac output, heart pumping function, especially with pulmonary wedge pressure.
波振幅的改变与心输出量及心脏的泵血功能，尤其是肺动脉楔压之间无明显关系。
The nearly absent atrial systole wave in DV Doppler flow imaging suggests presence of increased cardiac preload and right heart dysfunction.
DV多普勒血流波形心房收缩波形缺失提示心脏前负荷增加、右心功能不良。
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