Patent ID: 7917216

Claim:
A method of treating atrial tachyarrhythmia having an associated reentrant circuit, using one or more of a plurality of predefined, multi-site electrode sets implanted in or on the atria, each multi-site electrode set comprising at least two electrodes configured to have pacing stimuli applied thereto, said method comprising: selecting a plurality of electrode sets from the plurality of predefined, multi-site electrode sets; for each selected electrode set, sensing signals from the reentrant circuit at each electrode within the electrode set, determining whether the signals sensed at each electrode within the electrode set are sensed at approximately the same time; if the signals are sensed at approximately the same time, identifying the electrode set as an electrode set that will generate an electrical activation pattern through the reentrant circuit having a wave front between substantially flat and concave; based on the respective timing of the sensed signals for each selected electrode set, determining the relative closeness of the selected electrode sets to the reentrant circuit; identifying the electrode set closest to the reentrant circuit that is identified as an electrode set that will generate an electrical activation pattern through the reentrant circuit having a wave front between substantially flat and concave; and applying individual pacing stimuli to each of the at least two electrodes within the identified electrode set.