Some reflections on the significance of vectorcardiography in diagnosing coronary and hypertrophic heart disease
Vectorcardiography, although for many years primarily of scientific value, has become today widely accepted as a clinical routine examination. The main reason for its propagation is due to considerable improvement of the technical aspects, including especially the development of efficient oscilloscopes, thus permitting a greatly advanced recording system. At the same time a world-wide search for better lead systems brought the necessary simplifications allowing an easy clinical approach. Several vectorcardiographic systems have been proposed during the past two decades (Burch , Duchosal , Grishman , Frank , McFee ), differing in their arrangement of the various leads or in the application of various numbers and location of electrodes as well as in the presence or absence of corrections for lead strength and orthogonalisation. It cannot be the purpose of this brief discussion to evaluate the advantages of the various systems, especially the difference between corrected orthogonal and uncorrected lead systems. However, it should be emphasized that the majority of investigators has adopted the corrected, orthogonal system, developed by Frank or its modification by McFee. The requirement of only seven electrodes, five of them on the same thoracic level yields considerable clinical advantages.
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