Comparison of Four Orthogonal Systems of Vectorcardiography
Four orthogonal systems of vectorcardiography that are considered to be more accurate than the tetrahedron and cube systems were compared. In a large majority of subjects the records made with each of the 4 systems were similar. However, in 5 of 60 subjects in whom the Z lead was studied, dissimilarities were found that were considered to be significant. The possible reasons for these dissimilarities are discussed. Comparative normalization data for the systems were obtained in the living human subject, based upon comparison of wave forms.
- © 1958 American Heart Association, Inc.