Patent ID: 7765002

Claim:
A method comprising: monitoring an intrinsic electrical cardiac signal; deriving depolarization morphology information for candidate arrhythmic beats in an arrhythmia episode of the intrinsic electrical cardiac signal; selecting at least one of the candidate arrhythmic beats for use in forming an arrhythmic beat morphology template representative of the arrhythmia episode, the selecting including using a physician classification of the arrhythmia episode, the physician classification received from a physician and labeling the arrhythmia episode as an arrhythmia type of known arrhythmia types, and using information obtained from comparing at least one of a beat morphology, a cardiac cycle interval, a beat amplitude, and a rate zone classification of a candidate arrhythmic beat to respective information about the beat morphology, the cardiac cycle interval, the beat amplitude, and the rate zone classification of at least one other selected candidate arrhythmic beat from the arrhythmia episode; and forming the arrhythmic beat morphology template from depolarization morphology information of at least one of the selected candidate arrhythmic beats.