ECG Variable Cine: computer program for presentation of temporal changes in ECG variables over different number of ECG leads

The analysis of exercise electrocardiogram (ECG) is based on the alteration of the measured variables in the detection of corollary artery disease (CA D). In its existing form the analysis of the exercise ECG is laborious and requires much time. The temporal analysis of the ECG variable and the compa rison between different phases of the exercise test is difficult and time c onsuming, especially the simultaneous examination of the variables over sev eral leads. in this article we present a computer program, ECG Variable Cin e, for the visualization of the temporal changes of values of exercise ECG variables over the selected ECG lead system. The program includes the stati onary 3-D presentation for the variables' alteration simultaneously in all selected leads over the time of exercise test. In addition, the program det ermines two parameters; the average value of the variable over the selected leads at every sample moment, and the chronotropic index, a parameter that indicates heart rate response to exercise. According to the results the av erage value of ST-segment deviation at the end of the exercise over the lea ds and chronotropic index are clinically more competent than the maximum va lue of ST-segment depression in the detection of CAD. (C) 2000 Elsevier Sci ence Ireland Ltd. All rights reserved.