Abstract
Objective To investigate the reliability of electrocardiographic (ECG) signal for the accurate assessment of myocardial ischemia in order to evaluate the clinical value of remote real-time ECG monitoring system based on GPRS in patients with acute ST-elevation myocardial infarction (STEMI).Methods A total of 60 STEMI patients admitted between April 2008 and December 2010 were enrolled.All subjects were given the remote real-time ECG monitoring and routine 12 leads ECG monitoring at the same time.They were divided into remote ECG group and the 12 leads ECG group.The remote real-time ECG monitoring collects electrocardiosignal to imitate V1,V3,V5 lead and Ⅰ lead.P wave duration,PR interval,duration of time limit of QRS wave and T wave,QT interval,and the P wave amplitude,QRS wave amplitude,R-(Q + S),T wave amplitude were measured,and the detectability rate of arrhythmia and the definited diagnosis rate of ST segment elevation in accordance with clinical manifestion were compared in each group with different parameters.The data were analyzed by t test,rank sum test,Pearson correlation analysis,Spearman's rank correlation and the chi-square test.Results In STEMI patients,there were no statistical differences in time limits and amplitude of waves on ECG between the two groups (P ＞ 0.05),and the correlations between parameters of two groups were found to be close (P ＜ 0.01).There was no difference in the detectability rate of cardiac arrhythmia between two groups (P ＞ 0.05),and no difference in the rate of correct diagnosis of elevated ST segment between two groups (P ＞ 0.05),except V1 lead (P ＜ 0.05).Conclusions The sensitivity of the change in ST segment of the two groups is similar,and the remote real-time ECG monitoring can help determine the location of myocardial ischemia. Key words: Remote monitoring; Tele-ECG; Mobile ECG; Acute ST-elevation myocardial infarction
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