DISAPPEARANCE OF Q-DEFLECTION FOLLOWING MYOCARDIAL INFARCTION
DISAPPEARANCE OF Q-DEFLECTION FOLLOWING MYOCARDIAL INFARCTION
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DOI：
10.1016/0002-8703(68)90194-4
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发表时间：
1968-01-01
影响因子：
4.8
通讯作者：
SARKAR, NK
中科院分区：
文献类型：
--
作者：
KALBFLEISCH, JM;SHADAKSHARAPPA, KS;SARKAR, NK
本文回顾了775例心肌梗死后1个月至10年的连续心电图。大量患者（6.7%）表现出异常Q波消失，另外5.2%的患者仅表现出与既往梗死相关的模糊Q波变化。在那些Q波异常消失的病例中，大多数（69%）与梗死区愈合同时消退；只有大约八分之一的患者出现左束支阻滞，掩盖了先前梗死的心电图证据。导致q偏转的其他因素是脑室内阻滞的发展（12%），而不是束支阻滞（12%）和随后发生的心肌梗死（8%），掩盖了先前梗死的证据。大多数心电图显示明显的q偏消失在梗死后2年内；六年过去了，一切都没有改变。在这些患者中，异常q偏转的消失与更好的预后无关。
Serial ECG's of 775 patients followed from one month to 10 years after myocardial infarction were reviewed. A significant number, 6.7 per cent, showed disappearance of abnormal Q waves, and an additional 5.2 per cent showed only equivocal Q wave changes related to previous infarction. In those cases where the Q wave abnormality disappeared, the majority (69 per cent) regressed coincidentally with healing of the infarcted area; in only about one-eighth, left bundle branch block supervened to mask the electrocardiographic evidence of previous infarctions. Additional factors leading to regression of the Q-deflection were the development of intraventricular blocks other than bundle branch block (12 per cent) and the subsequent occurrence of myocardial infarction (8 per cent) obscuring the evidences of previous infarction. The majority of the ECG's which showed disappearance of significant Q-deflections did so within two years following infarction; none changed after six years. The disappearance of abnormal Q-deflections in the ECG was not associated with a better prognosis in these patients.