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对９４例冠心病（ＣＨＤ）病人进行２４ｈ动态心电图（ＡＥＧ）监测。结果显示，有缺血型ＳＴ段改变者６０例，共发作１９４例次；其中７５．３％为无症状性心肌缺血（ＳＭＩ）。心肌梗塞（ＭＩ）组中ＳＭＩ１２５例次，占８１．７％；心绞痛组（ＡＰ）中ＳＭＩ２１例次，占５１．２％，两者比较差异有极显著性（Ｐ＜０．０１）。ＳＭＩ发作有昼夜规律。ＳＭＩ伴心律失常在ＭＩ组（７２．１％）较ＡＰ组（３５．５％）差异有极显著性（Ｐ＜０．０１）。本文还就ＳＭＩ的可能机理并就此指导治疗及判断ＣＨＤ预后等进行讨论。
94 patients with coronary heart disease (CHD) patients 24h dynamic electrocardiogram (AEG) monitoring. The results showed that ischemic ST segment changes in 60 cases, a total of 194 cases were times; 75.3% of them asymptomatic myocardial ischemia (SMI). SMI125 in MI group accounted for 81.7%; SMI21 in AP group was 51.2%, the difference was significant (P <0.01). SMI seizures have day and night rules. SMI with arrhythmias in MI group (72.1%) compared with AP group (35.5%) the difference was significant (P <0.01). This article also discussed the possible mechanisms of SMI and guidance on treatment and prognosis of CHD.