Use of mechanical restitution to predict hemodynamic response to a rapid ventricular rhythm
First Claim
1. A method, comprising:
- measuring a mechanical restitution parameter;
performing a comparative analysis of the measured mechanical restitution parameter; and
predicting the hemodynamic response to a fast heart rate based on the comparative analysis.
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Abstract
An implantable cardiac stimulation device and associated method for predicting the hemodynamic response to a rapid heart rhythm. The system includes an implantable cardiac stimulation device and associated sensors of electrical and mechanical heart function. The associated method includes measuring a mechanical restitution (MR) parameter or surrogate thereof, performing a comparative analysis of the MR parameter, and predicting an unstable or stable hemodynamic response to a rapid heart rate based on the comparative analysis. If an unstable hemodynamic response to a rapid rhythm is predicted, a more aggressive menu of arrhythmia therapies may be programmed to treat tachycardia. If a stable hemodynamic response is predicted, a less aggressive menu of therapies may be programmed to treat tachycardia.
41 Citations
28 Claims
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1. A method, comprising:
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measuring a mechanical restitution parameter;
performing a comparative analysis of the measured mechanical restitution parameter; and
predicting the hemodynamic response to a fast heart rate based on the comparative analysis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of delivering a therapy to a patient from a medical device, comprising:
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determining a parameter associated with the mechanical restitution of the patient;
determining whether the parameter indicates a reduction in hemodynamic compensation responsive to an increased heart rate; and
adjusting the therapy delivery in response to the determining whether the parameter indicates a reduction in hemodynamic compensation. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. An apparatus for delivering a therapy to a patient, comprising
means for determining a parameter associated with the mechanical restitution of the patient; -
means for determining whether the parameter indicates a reduction in hemodynamic compensation responsive to an increased heart rate; and
means for adjusting the therapy delivery in response to the determining whether the parameter indicates a reduction in hemodynamic compensation. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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28. A computer readable medium having computer executable instructions for performing a method comprising:
means for determining a parameter associated with the mechanical restitution of the patient;
means for determining whether the parameter indicates a reduction in hemodynamic compensation responsive to an increased heart rate; and
means for adjusting the therapy delivery in response to the determining whether the parameter indicates a reduction in hemodynamic compensation.
Specification