近代电生理学理论的深入发展,新的抗心律失常药物和介入疗法的不断涌现及心律失常与心源性猝死之间关系的逐步阐明,促使人们对快速心律失常的血流动力学进行深入研究。多普勒超声心动图是实时测量血流动力学的技术,是测定心功能的金标准。但应用该技术对室速时血流动力学的临床 The development of modern electrophysiological theory, the continuous emergence of new anti-arrhythmic drugs and interventional therapy and the elucidation of the relationship between arrhythmia and sudden cardiac death have prompted further study on the hemodynamics of tachyarrhythmia. Doppler echocardiography is a real-time measurement of hemodynamics and is the gold standard for determining cardiac function. However, the clinical application of this technique to VT tachyarrhythmias