Hemodynamic stability assessment based on heart sounds
First Claim
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1. A method comprising:
- detecting at least one episode of ventricular tachyarrhythmia in a subject using an implantable medical device (IMD);
sensing at least one heart sound signal for the subject using the IMD, the heart sound signal associated with mechanical vibration of a heart of the subject;
initiating, in response to and during the detected episode of tachyarrhythmia, a measurement of hemodynamic stability of the ventricular tachyarrhythmia from the heart sound signal, wherein the measurement of hemodynamic stability is determined using linear prediction; and
deeming whether the ventricular tachyarrhythmia is stable according to the measurement of hemodynamic stability.
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Abstract
A method comprises detecting at least one episode of ventricular tachyarrhythmia in a subject using an implantable medical device (IMD), sensing at least one heart sound signal for the subject using the IMD, the heart sound signal associated with mechanical vibration of a heart of the subject; initiating, in response to and during the detected episode of tachyarrhythmia, a measurement of hemodynamic stability of the ventricular tachyarrhythmia from the heart sound signal, and deeming whether the ventricular tachyarrhythmia is stable according to the measurement of hemodynamic stability. The measurement of hemodynamic stability is determined using linear prediction.
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20 Claims
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1. A method comprising:
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detecting at least one episode of ventricular tachyarrhythmia in a subject using an implantable medical device (IMD); sensing at least one heart sound signal for the subject using the IMD, the heart sound signal associated with mechanical vibration of a heart of the subject; initiating, in response to and during the detected episode of tachyarrhythmia, a measurement of hemodynamic stability of the ventricular tachyarrhythmia from the heart sound signal, wherein the measurement of hemodynamic stability is determined using linear prediction; and deeming whether the ventricular tachyarrhythmia is stable according to the measurement of hemodynamic stability. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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