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T波电交替现象的临床意义 被引量:4

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摘要 心脏电交替简称电交替(electricalahernans)指体表心电图上QRS波群、ST段和T波形态和电压甚至极性呈逐搏交替变化,是一种异常的心脏电生理现象。其中来自同一起搏点的T波若呈上述改变,即为T波电交替(Twaveahertans),在心电图上表现为QRS波群末端至T波末端的形态呈现ABABAB…的形式(图1)。最常见的电交替比例为2:1,少数还有3:1、4:1,甚至更为复杂的情况。临床上可见于急性心肌缺血、心力衰竭、长Q-T间期综合征、代谢紊乱、冠脉搭桥术、经皮腔内冠状动脉成形术等情况。
作者 许蓓 胡申江
出处 《心电学杂志》 2007年第4期255-259,共5页 Journal of Electrocardiology(China)
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参考文献24

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同被引文献81

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