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为了对急性心肌梗塞(AMI)患者发生心性猝死和/或严重心律失常的危险性进行预测,作者对 AMI 存活者的心率(HR)变化进行了细致的观测,目的在于找出动态心电图记录的最佳时机和持续时间。本研究对在年龄、性别、梗塞部位、射血分数及β阻滞剂治疗等方面均配对的两组 AMI 患者的 HR 变化进行了比较。第一组患者(20例)AMI 后早期存活,但在6个月随访期间发生了严重事件(死亡或有症状的持续性室速)。第二组患者(20例)出院已超过6个月,一直未发生并发症。AMI 后头2周内记录完整的24小时动态心电图,评估 HR 的变化。对于每一例患者,根据24小时动态心电图记录,变换记录的起始时间和持续时间,计算不同时间间期的 HR。具体说,从0:00到23:40以20分钟为间隔时间一共可获得72个记录起始时间不相同的数值。同样,以20分钟为时间间隔,从最短为20分钟到最长为24小时,也可
To predict the risk of sudden cardiac death and / or severe arrhythmia in patients with acute myocardial infarction (AMI), the authors carefully examined heart rate (HR) changes in AMI survivors with the aim of finding the most Good timing and duration. This study compared HR changes in two groups of AMI patients matched for age, gender, infarct location, ejection fraction, and beta blocker treatment. The first group of patients (20 patients) survived early after AMI, but a serious event (sustained or symptomatic persistent VT) occurred during the 6-month follow-up period. The second group of patients (20 patients) had been discharged for more than 6 months and no complications had been reported. A complete 24-hour ambulatory ECG was recorded during the first 2 weeks after AMI to assess HR changes. For each patient, the HR for different time periods was calculated based on the 24-hour Holter recording, the start time and the duration of recording change. Specifically, a total of 72 recording start times differ from 20:00 to 23:40 for a total of 72 hours. Similarly, the time interval of 20 minutes, from the shortest of 20 minutes to a maximum of 24 hours, but also