Distinguishing ectopic sites in the canine heart by means of body surface waveforms
Experimental data are presented for distinguishing sites of origin of ventricular excitation sequences using a single body surface waveform. Waveforms from different ectopic regions of a canine heart were compared. When comparing waveforms, all possible time alignments were considered and two error analyses were performed. For the one electrode presented, the minimum voltage difference between corresponding points on aligned waveforms was 356 μV.