In an implantable medical device, a method for monitoring changes in heart disease, comprising:
- sensing selected complexes within an intracardiac electrogram;
- measuring an amplitude, width and polarity of each of the selected complexes;
- comparing the amplitude, width and polarity of a current complex with the amplitude, width and polarity of a previous complex to detect relative changes therebetween;
- and
- reporting the relative changes between the current complex and the previous complex, wherein the relative changes correspond to changes in the progression or regression of the heart disease.