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Continuous monitoring using a predictive instrument

  • US 5,718,233 A
  • Filed: 01/11/1996
  • Issued: 02/17/1998
  • Est. Priority Date: 08/01/1994
  • Status: Expired due to Term
First Claim
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1. A system for continuously monitoring the condition of a patient who has a cardiovascular disease, said system comprising:

  • an electrocardiograph which during use is connected to the patient;

    a waveform analyzer which analyzes a segment of an ECG waveform generated by the electrocardiograph for the patient;

    a predictive instrument receiving output from the waveform analyzer, said predictive instrument programmed to complete a monitoring cycle in which the predictive instrument uses the output from the waveform analyzer to compute a probability of a life threatening cardiac condition based upon the segment of the patient'"'"'s ECG waveform; and

    a detector module which receives computed probabilities from the predictive instrument for a sequence of monitoring cycles and for each monitoring cycle is programmed to compute a change-of-condition measure, wherein said change-of-condition measure is calculated by subtracting a computed probability for a previous monitoring cycle from the computed probability for a current monitoring cycle,said detector module further programmed to compare during each monitoring cycle the computed change-of-condition measure for that monitoring cycle to a threshold value and if in excess of said threshold value to generate an alarm notification.

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