Debels M, Romagnoli M, Convens K, Block P
Academisch Ziekenhuis, Vrije Universiteit Brussel Laarbeeklaan, Bruxelles, Belgique.
Ann Cardiol Angeiol (Paris). 1990 May;39(5):259-63.
The mean high-amplification ECG (MECG) used to detect delayed potentials (DPs) has so far been used only at rest and after exertion. In this article, the results are reported of recording the MECG at rest and during exercise (ER) obtained in 19 patients, the ER having been carried out at the subacute stage of myocardial infarction. Despite a significant increase in the background noise during exercise from 0.9 microV to 2.2 microV, it was possible to analyse the MECG recorded during exercise to detect DPs in all cases. In this small group of patients, no significant changes occurred with regard to the appearance or delayed potentials during exercise, although there was a reduction in the duration of HFQRS and an increase in the amplitude of RMS40 during exercise which was, however, much less marked in patients presenting DP.
用于检测延迟电位（DPs）的平均高放大率心电图（MECG）迄今仅在静息和运动后使用。本文报告了对19例患者在静息和运动期间记录MECG的结果，这些运动是在心肌梗死亚急性期进行的。尽管运动期间背景噪声从0.9微伏显著增加到2.2微伏，但仍有可能分析运动期间记录的MECG以在所有病例中检测DPs。在这一小群患者中，运动期间DPs的出现或延迟电位没有显著变化，尽管运动期间高频QRS（HFQRS）的持续时间缩短，均方根40（RMS40）的幅度增加，然而，在出现DPs的患者中这种变化不太明显。
