Implantable cardiac stimulation device for and method of monitoring progression or regression of a patient's heart condition by monitoring ventricular repolarization interval dispersion

摘要

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.