【摘要】 目的 探讨异丙肾上腺素在慢室率阵发性心动过速与非阵发性心动过速鉴别诊断中的价值。方法 15例慢室率阵发性心动过速和非阵发性心动过速患者在心动过速时静脉滴注异丙肾上腺素，观察其心律和心率变化。结果 6例患者心动过速的频率逐渐增快，分别诊断为慢性持续性交界性心动过速(3例)、慢性房性心动过速(2例)和窦房结折返性心动过速(1例);另9例异位心律失常消失，转变为窦性心动过速，停止滴注后数分钟5例再次出现原心律失常，诊断为非阵发性室性心动过速(3例)和非阵发性交界性心动过速(6例)。结论 阵发性心动过速和非阵发性心动过速的发生机制不同，因此对异丙肾上腺素的反应亦不相同;可静脉滴注异丙肾上腺素鉴别慢室率阵发性心动过速和非阵发性心动过速。

    关键词 异丙肾上腺素 心动过速 阵发性 非阵发性 心律失常

    The role of isoprenaline in differential diagnosis of paroxysmal tachycardia with slow ventricular rate from non-paroxysmal tachycardia

    Zhang Zhengxiang，Zheng Liguang，Xie Qun，et al.

    Department of Cardiology，People’s Hospital of Luohu，Shenzhen518001

    【Abstract】 Objective It is difficult to differentiate paroxysmal tachycardia with slow ventricularrate from non-paroxysmal tachycardia using common standards.This study aims to explore the role of isoprenalinein the differential diˉagnosis of the two arrhythmias stated above.Methods The Changes of rhythm and heart rate were recorded and analyzed in15patients with paroxysmal tachycardia with slow ventricular rate and non-paroxysmal tachycardia during isoprenaline intravenous drip.Results During isoprenaline administration the heart rate of arrhythmia in6cases went faster gradually and They were diagnosed as chronic sustained junctional tachycardia(3cases)and chronic atrial tachycardia(2cases)and sinoatrial reentrant tachycardia(1case)respectively;while the arrhythmias in other9cases disappered and turned to sinus tachycardiac and several minites after isoprenaline administration the arrhythmia in5cases recurred again ......