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USING RESPIRATION DISTRESS MANIFESTATIONS FOR HEART FAILURE DETECTION

  • US 20080262360A1
  • Filed: 04/17/2007
  • Published: 10/23/2008
  • Est. Priority Date: 04/17/2007
  • Status: Active Grant
First Claim
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1. A system comprising:

  • an implantable medical device including,a respiration sensor circuit configured for producing a respiration signal indicative of a respiration or a respiration related parameter of a subject; and

    a physiological sensor circuit that includes at least one of a physical activity sensor circuit configured for producing a physical activity signal indicative of a physical activity level of the subject or a posture sensor circuit configured for producing a posture signal indicative of a posture of the subject; and

    an implantable or external processor circuit including an input to receive information about the respiration signal and at least one of the physical activity signal or the posture signal, the processor circuit configured for detecting a respiration disturbance using the respiration signal and configured for detecting an associated subsequent arousal from stable state occurrence from at least one of the physical activity signal or the posture signal, the processor circuit further configured for evaluating over time, at least in part, arousal from stable state occurrences for providing an indication of present or impending worsening heart failure.

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