Implantable cardiac stimulation device for and method of monitoring progression or regression of a patient's heart condition by monitoring ventricular repolarization interval dispersion
First Claim
1. In an implantable cardiac stimulation device, a system that monitors progression or regression of a patient'"'"'s heart condition, the system comprising:
- a plurality of electrodes that provide a plurality of electrode configurations including right and left heart sensing electrode configurations;
at least one sensing circuit that senses cardiac activity with the plurality of the electrode configurations to provide a plurality of electrical signals representing electrical activity of the heart;
a processor coupled to the at least one sensing circuit and programmed to determine, at spaced apart times, a ventricular repolarization interval in each of the electrical signals and a corresponding ventricular repolarization interval dispersion;
a memory that stores the ventricular repolarization interval dispersions over time, relative changes in the ventricular repolarization interval dispersions, over time, being indicative of the progression or regression of the patient'"'"'s heart condition; and
a telemetry circuit configured for transmitting the ventricular repolarization interval dispersions stored in the memory to an external receiver.
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Accused Products
Abstract
An implantable cardiac stimulation device includes a system that monitors progression or regression of a patient'"'"'s heart condition. The system includes a plurality of electrode configurations for sensing cardiac activity of the heart. A sensing circuit provides an electrical signal representing electrical activity of the heart from each of the sensing electrode configurations. A processor coupled to the sensing circuit determines, at spaced apart times, and over time, a ventricular repolarization interval in each of the electrical signals and a corresponding ventricular repolarization interval dispersion. A memory stores the ventricular repolarization interval dispersions for transmission by a telemetry circuit to an external receiver for analysis.
103 Citations
39 Claims
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1. In an implantable cardiac stimulation device, a system that monitors progression or regression of a patient'"'"'s heart condition, the system comprising:
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a plurality of electrodes that provide a plurality of electrode configurations including right and left heart sensing electrode configurations;
at least one sensing circuit that senses cardiac activity with the plurality of the electrode configurations to provide a plurality of electrical signals representing electrical activity of the heart;
a processor coupled to the at least one sensing circuit and programmed to determine, at spaced apart times, a ventricular repolarization interval in each of the electrical signals and a corresponding ventricular repolarization interval dispersion;
a memory that stores the ventricular repolarization interval dispersions over time, relative changes in the ventricular repolarization interval dispersions, over time, being indicative of the progression or regression of the patient'"'"'s heart condition; and
a telemetry circuit configured for transmitting the ventricular repolarization interval dispersions stored in the memory to an external receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. In an Implantable cardiac stimulation device, a system for monitoring progression or regression of a patient'"'"'s heart condition, the system comprising:
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sensing means for sensing electrical activity of the heart for providing a plurality of electrical signals representing right and left heart electrical activity;
control means, responsive to the sensing means, for measuring, at spaced apart times, a ventricular repolarization interval in each of the electrical signals;
means responsive to the measured ventricular repolarization intervals for determining a ventricular repolarization interval dispersion;
storage means for storing the ventricular repolarization interval dispersions, wherein relative changes in the ventricular repolarization interval dispersions, over time, are indicative of the progression or regression in the patient'"'"'s heart condition; and
means for conveying the stored ventricular repolarization interval dispersions to a nonimplanted receiver for analysis. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. In an implantable cardiac stimulation device, a method of monitoring progression or regression of a patient'"'"'s heart condition, the method including the steps of:
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sensing electrical activity of the heart between a plurality of different locations of the heart to provide a number of electrical signals representing right and left heart electrical activity;
deriving, at spaced apart times, a ventricular repolarization interval from each of the electrical signals;
determining, from the derived ventricular repolarization intervals, a ventricular repolarization interval dispersion; and
storing the ventricular repolarization interval dispersions in a memory, wherein relative changes in the ventricular repolarization interval dispersions, over time, are indicative of the progression or regression in the patient'"'"'s heart condition. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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Specification