Relationship Between Electrocardiography and Vectorcardiography

Abstract

Appropriate selection of XYZ leads that (1) represent mutually perpendicular coordinate axes, (2) represent all of the heart's electric activity as a single dipole vector, and (3) are of equal sensitivity is the greatest problem in the methodology of vectorcardiography. The information contained in the leads is used as an input to the horizontal and vertical plates of a cathode-ray tube and depicted on the XY plot, or vectorcardiographic plane.