Patent Document ID: 20030130586
Application ID: 10308821
Patent Flag: 0

Claim One:
1. A method of screening for risk of cardiac arrhythmia in a subject, the method comprising the steps of: (a) collecting at least one QT and RR interval data set from the subject during (i) a stage of gradually increasing heart rate, (ii) a stage of gradually decreasing heart rate, or (iii) both a stage of gradually increasing heart rate and gradually decreasing heart rate; (b) separating fluctuations from slow trends in said at least one QT and RR interval data set; (c) comparing said QT and RR fluctuations to one another to determine the difference therebetween; and (d) generating from the comparison of step (c) a measure of risk of cardiac arrhythmia in said subject, wherein a greater difference between QT and RR fluctuations indicates greater risk of cardiac arrhythmia in said subject.