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本研究评估急性心肌梗塞(AMI)患者早期住院期间动态心电图监测(AEM)出ST段改变的预后价值。采用定义ST段参照水平及测量ST段抬高的新方法。ST段压低定义为J点后80毫秒处水平或下斜型压低≥0.1mV,持续≥1分钟,ST段抬高定义为J点处(J点后0～5毫秒)高于参照水平≥0.15mV,持续≥1分钟;作为2次ST段改变,间隔时间应≥2分钟。计算机自动检测并计算出ST段参照水平及ST段改变:(1)“等电
This study assessed the prognostic value of ST segment changes in ambulatory electrocardiogram monitoring (AEM) during early hospitalizations in patients with acute myocardial infarction (AMI). A new method of defining ST segment reference levels and measuring ST segment elevation was used. ST-segment depression was defined as a horizontal or down-ramp depression of ≥0.1 mV at 80 milliseconds after J-point for ≥1 minute, and ST elevation was defined as J-point elevation (0 to 5 milliseconds after J-point) greater than the reference level ≥0.15 mV, sustained ≥ 1 minute; as 2 ST-segment changes, the interval should be ≥ 2 minutes. Computer automatically detects and calculates the ST segment reference level and ST segment changes: (1) "Electricity