Patent ID: 6931281
Filing Date: 2005-08-16
Classification: A61N

Abstract:
1. A method of monitoring a conduction velocity of a myocardial tissue for use in a cardiac stimulation device, comprising: delivering a stimulus that causes an evoked myocardial depolarization using a stimulating electrode located on a multipolar lead; detecting the evoked myocardial depolarization using a sensing electrode located on the multipolar lead that is separated by a predetermined distance from the stimulating electrode; determining a time of occurrence of a feature of the evoked myocardial depolarization; calculating a myocardial conduction time as a difference between a time at which the stimulus was delivered and the time of the depolarization signal feature; and calculating the conduction velocity by dividing the myocardial conduction time by an inter-electrode distance between the stimulating electrode and the sensing electrode.