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Method and system for evaluating cardiac ischemia

  • US 6,361,503 B1
  • Filed: 06/26/2000
  • Issued: 03/26/2002
  • Est. Priority Date: 06/26/2000
  • Status: Expired due to Fees
First Claim
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1. A method of assessing cardiac ischemia in a subject to provide a measure of cardiovascular health in said subject during stimulation in said subject, said method comprising the steps of:

  • (a) collecting a first QT- and RR-interval data set from said subject during a stage of gradually increasing heart rate;

    (b) collecting a second QT- and RR-interval data set from said subject during a stage of gradually decreasing heart rate, with said first and second QT- and RR-interval data sets being collected while minimizing the influence of rapid transients due to autonomic nervous system and hormonal control on said data sets;

    (c) comparing said first QT- and RR-interval data set to said second QT- and RR-interval data set to determine the difference between said data sets; and

    (d) generating from said comparison of step (c) a measure of cardiac ischemia during stimulation in said subject, wherein a greater said difference between said first and second data sets indicates greater cardiac ischemia and lesser cardiovascular health in said subject.

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