Apparatus and Method for Detecting Cardiac Events

  • US 20100030034A1
  • Filed: 07/31/2008
  • Published: 02/04/2010
  • Est. Priority Date: 07/31/2008
  • Status: Active Grant
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First Claim
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1. A method for monitoring of cardiac conditions incorporating an implantable medical device in a subject, the method comprising the steps of:

  • collecting physiological data associated with the subject from the implantable device, wherein the collected data includes real-time electrocardiac signal data, heart sound data, activity level data and tissue perfusion data;

    comparing the electrocardiac signal data with a threshold electrocardiac criteria for indicating a strong likelihood of a cardiac event;

    triggering an alarm state if the electrocardiac signal data is not within the threshold electrocardiac criteria;

    determining the current activity level of the subject from the activity level data if the electrocardiac signal data is within the threshold electrocardiac criteria;

    comparing the tissue perfusion data with a threshold tissue perfusion criteria for indicating a strong likelihood of a cardiac event if the current activity level is below a threshold activity level;

    triggering an alarm state if the threshold tissue perfusion data is not within the threshold tissue perfusion criteria; and

    triggering an alarm state if the threshold tissue perfusion data is within the threshold tissue perfusion criteria and the heart sound data indicates that S3 and S4 heart sounds are detected,wherein if an alarm state is not triggered, the physiological data associated with the subject is collected at the expiration of a preset period of time.

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