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HEMODYNAMIC STABILITY ASSESSMENT BASED ON HEART SOUNDS

  • US 20070239218A1
  • Filed: 03/29/2006
  • Published: 10/11/2007
  • Est. Priority Date: 03/29/2006
  • Status: Active Grant
First Claim
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1. A system comprising:

  • an implantable medical device (IMD) comprising;

    an implantable heart sound sensor operable to produce an electrical signal representative of at least one heart sound, the heart sound associated with mechanical activity of a patient'"'"'s heart;

    a heart sound sensor interface circuit coupled to the heart sound sensor to produce a heart sound signal;

    a tachyarrhythmia detector; and

    a controller circuit coupled to the heart sound sensor interface circuit and the tachyarrhythmia detector, wherein the controller circuit includes a hemodynamic stability assessment module configured to;

    determine that at least one episode of ventricular tachyarrhythmia is detected in a subject; and

    obtain a measurement of hemodynamic stability of the ventricular tachyarrhythmia from the heart sound signal.

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