Patent ID: 6766190
Filing Date: 2004-07-20
Classification: A61B

Abstract:
A method of developing a vectorcardiogram projected onto at least one of reference sagittal, horizontal, and frontal planes of the body employing an implantable medical device comprising:implanting a pair of vectorcardiogram sense electrodes to define an internal lead vector in the body having a vector orientation in relation to the reference sagittal, horizontal, and frontal planes of the body; coupling the pair of vectorcardiogram sense electrodes with the implantable medical device; sensing the PQRST electrogram of the heart across the internal lead vector; and deriving the orientation and magnitude of the wave front of at least one of the P-wave, QRS wave and T-wave of the sensed PQRST electrogram aver the fine of occurrence of the sensed PQRST electrogram as at least one of an x-axis vector projected into the reference sagittal plane as a sagittal vectorcardiogram, a y-axis vector projected into the reference horizontal plane as a horizontal vectorcardiogram, and a z-axis vector projected into the reference frontal plane as a frontal vectorcardiogram.