Patent ID: 8812094

Claim:
An intracardiac signal processing device including: a. a morphology detection unit configured to: (1) receive a signal representing an electrocardiogram or a portion thereof; (2) determine peak values representing magnitudes of the maxima and minima within the signal, (3) determine peak-to-peak values of a first type from adjacent peak values having opposite polarities, each peak-to-peak value of the first type representing a sum of the absolute values of the adjacent peak values therein, (4) define a morphology vector from the peak-to-peak values of the first type, the morphology vector characterizing the morphology of the signal; b. a morphology discrimination unit in communication with the morphology detection unit, the morphology discrimination unit being configured to: (1) compare the morphology vector to a stored reference vector, and (2) classify the morphology vector as indicative of supraventricular tachycardia or ventricular tachycardia in dependence on the comparison.