近十余年来很多学者指出给予血管加压药物可以终止阵发性室上性和室性心动过速。临床医师已经观察到快速的心动过速和频繁的期前收缩时常发生心绞痛,尤其是患者已存有冠状动脉狭窄者,常发生心电图及心肌病理上典型的冠状动脉供血不足的改变。在动物试验上(狗),室上性心动过速可减少冠状动脉血流量达45％,在室性可减少 Over the past decade or so many scholars have pointed out that given vasopressors can terminate paroxysmal supraventricular and ventricular tachycardia. Clinicians have observed that angina pectoris often occurs during rapid tachycardia and frequent premature contractions, especially if the patient has had a stenosed coronary artery and frequently undergoes electrocardiogram and cardiomyopathological typical changes in coronary insufficiency. In animal experiments (dogs), supraventricular tachycardia can reduce coronary blood flow up to 45%, decreased ventricular