| 急性心肌梗塞早期心室易损性的电生理实验研究 |
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| 引用本文： | 刘伟宏,李庚山.急性心肌梗塞早期心室易损性的电生理实验研究[J].中国病理生理杂志,1993,9(6):699-702. |
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| 作者姓名： | 刘伟宏 李庚山 |
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| 作者单位： | 湖北医学院附属一院心血管病研究室，湖北医学院附属一院心血管病研究室 武汉 430060，武汉 430060 |
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| 摘 要： | 本文采用Ｓ１－Ｓ２程控电刺激方法同时测定心室易期和室颤阈，并结合其它有关电生理指标，评价了急性心肌梗塞早期心室易损性。结果表明，急性心肌梗塞早期，心室易损期明显延长，室颤阈显著下降，起搏阈值降低，有效不应期缩短，强度间期曲线下移，心室易损期外缘向Ｔ波方向延伸，联律间期与折回间期呈负相关。根据上述指标分析了急性心肌梗塞早期室性心动过速和／或心室颤动产生的电生理机制以及心室易损期在ｒｏｎＴ室性早搏触发
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| 关 键 词： | 心室纤颤 心肌梗塞 |
Electrophysiology of ventricular vulnerability during early acute myocardial infarction |
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| Liu Wei-Hong,Li Geng-Shan.Electrophysiology of ventricular vulnerability during early acute myocardial infarction[J].Chinese Journal of Pathophysiology,1993,9(6):699-702. |
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| Authors: | Liu Wei-Hong Li Geng-Shan |
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| Institution: | Liu Wei-Hong,Li Geng-Shan Department of Cardiovascular Disease,First Affiliated Hospital,Hubei Medical University,Wuhan |
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| Abstract: | Ventricular vulnerable period (VVP) and veniricular fibrillation thre-sheld (VFT) and other electrophysiological items were measured simultaneously with S_1-S_2programmed electrical stimulation. The results showed that during early period of acutemyocardial infarction (AMI) VVP prolonged greatly, VFT decreased remarkably, pacingthreshold decreased, effective refractory period (ERP) shortened, strength interval curve(SIC) shifted downward, the outside of VVP extended to T wave, coupling-interval wasnegatively correlated with echo-interval. The results indicated that myocardial vulnerabi-lity during early period of AMI increased and ventricular arrhythmias were mainly causedby reentry. |
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| Keywords: | Ventricular fibrillation Myocardial infarction |
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