Patent Document ID: 7756578
Application ID: 11276213
Patent Flag: 1

Claim One:
1. A method for classifying a tachyarrhythmia in a heart, the method comprising: sensing one or more sequences of atrial and ventricular contractions associated with the tachyarrhythmia; selecting one or more template patterns of respective sequences of atrial and ventricular contractions; and obtaining a first classification of the tachyarrhythmia based on whether a match exists between the one or more sequences of atrial and ventricular contractions and the one or more template patterns, wherein the obtaining the first classification comprises: initializing a counter value; defining one or more VT-likely template patterns representing one or more corresponding indications that a ventricular tachyarrhythmia is likely; defining one or more SYT-likely template patterns representing one or more corresponding indications that a supraventricular tachyarrhythmia is likely; incrementing the counter value for each VT-likely template pattern found associated with the tachyarrhythmia; decrementing the counter value for each SYT-likely template pattern found associated with the tachyarrhythmia; and classifying the tachyarrhythmia as more likely indicative of ventricular tachyarrhythmia if the counter value exceeds a threshold value.