| 氯化铯诱发在体心脏触发性心律失常的实验研究 |
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| 引用本文： | 杨向军,惠杰,汪康平,蒋文平.氯化铯诱发在体心脏触发性心律失常的实验研究[J].中国心脏起搏与心电生理杂志,1993(1). |
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| 作者姓名： | 杨向军 惠杰 汪康平 蒋文平 |
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| 作者单位： | 苏州医学院附属第一医院心血管研究室，苏州医学院附属第一医院心血管研究室，苏州医学院附属第一医院心血管研究室，苏州医学院附属第一医院心血管研究室 苏州 215006，苏州 215006，苏州 215006，苏州 215006 |
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| 摘 要： | 心内膜单相动作电位研究表明,单相动作电位的复极进程能够正确反映心肌细胞动作电位复极时程。狗静脉注射氯化铯后早期后除极电位(EAD)的发生率为100％,单相动作电位90％复极时程明显延长(224.4±50.6ms VS 368.4±34ms),与QT间期延长相一致。氯化铯诱发的室性心律失常发生于EAD顶峰,触发心律联律间期与EAD联律间期密切相关。硫酸镁使EAD和室性心律失常同时消失。提示该心律失常为EAD触发活性所致。
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| 关 键 词： | 单相动作电位 早期后除极电位 心律失常 氯化铯 硫酸镁 |
The Study of the Triggered Activities Induced by Cesium Chloride in Vivo |
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| Yang Xiangjun,Hui Jie,Wang Kangping,et al.The Study of the Triggered Activities Induced by Cesium Chloride in Vivo[J].Chinese Journal of Cardiac Pacing and Electrophysiology,1993(1). |
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| Authors: | Yang Xiangjun Hui Jie Wang Kangping |
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| Abstract: | The study of the monophasic action potential(MAP) from endocardium demonstrated that the duration of MAP might faithfully represented that of the transmembrane action potential. MAPD_(90) and QT interval were markedly prolonged simultaneously. Early afterdepolarization(EAD)were closely related to arrhythmias;(l)the potentials of the ventricular arrhythmias were on the peak of EAD;(2)the conpling interval of the afterdepolarization and the ventricular arrhythmias were nearly interrelated(r =0. 97);(3)EAD and the arrhythmias were suppressioned by magnesium simultaneously. |
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| Keywords: | Monophasic action potential Early afterdepolarization Arrhythmias Cesium choiride Magnesium sulfate |
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