应用１５只健康杂种犬建立室性心动过速（室速）模型，用多普勒超声血流显像仪和心导管测得左室收缩及舒张功能的一系列指标进行研究。结果显示：起源于左、右心室对应部位的室速对心功能的影响程度相同；同一心室不同起源部位的室速对左室收缩及舒张功能影响的严重程度不同，以心尖部室速影响程度最小，心室侧壁者次之，以心底部室速影响程度最大。 Fifteen healthy mongrel dogs were used to establish the model of ventricular tachycardia (VT). A series of indexes of left ventricular systolic and diastolic function were measured by Doppler sonography and cardiac catheterization. The results showed that: the ventricular rate originating from the left ventricle and the right ventricle corresponded to the same degree of ventricular function; the ventricular tachycardia at different origins of the same ventricle had different effects on left ventricular systolic and diastolic function, , Followed by ventricular wall were the most influential heart ventricular tachycardia.