The multiple electrocardiographic manifestations of ventricular repolarization memory.
The multiple electrocardiographic manifestations of ventricular repolarization memory.
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DOI：
10.2174/1573403x10666140514102021
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发表时间：
2014-08
影响因子：
1.9
通讯作者：
Elizari MV
中科院分区：
文献类型：
--
作者：
Chiale PA;Etcheverry D;Pastori JD;Fernandez PA;Garro HA;González MD;Elizari MV
T波“记忆”是一种特殊的心脏重塑，由心室除极过程中的短暂变化（由于心室起搏、速率依赖性心室内传导阻滞、心室预激或宽QRS波群的快速性心律失常）引起。通常表现为正常心室活动恢复时出现的 T 波倒置。这种现象是累积性的，如果心室心肌先前受到相同的条件刺激，则这种现象会更早发生。在这篇文章中，回顾了“经典”T波存储器发展的不同条件，并描述了“另一种”类型的T波存储器。研究还表明，心脏记忆不仅可以诱发负性（伪初级）T 波，还可以诱发初级和伪初级 T 波的逆转，从而导致心室复极“正常化”。了解 T 波记忆的这些不同后果对于评估心室复极的特征至关重要。
T wave “memory” is a peculiar variety of cardiac remodeling caused by a transient change in the course of ventricular depolarization (due to ventricular pacing, rate-dependent intraventricular block, ventricular preexcitation or tachyarrhythmias with wide QRS complexes). It is usually manifested by inverted T waves that appears when normal ventricular activation is restored. This phenomenon is cumulative and occurs earlier if the ventricular myocardium has previously been exposed to the same conditioning stimuli. In this article the different conditions giving rise to “classical” T wave memory development are reviewed and also “another” type of T wave memory is described. It is also shown that cardiac memory may induce not only negative (pseudo-primary) T waves but also a reversal of primary and pseudo-primary T waves leading to “normalization” of ventricular repolarization. The knowledge of these dissimilar consequences of T wave memory is essential to assess the characteristics of ventricular repolarization.