An Experimental Study of the Relationship between the Frank Lead System and the Precordial Leads

概要

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An isolated canine heart perfused with Tyrode solution was put into the human torso model filled with the electrolytic solution and the electrical center of the heart was determined by application of the cancellation method and the equivalent dipole moment during depolarization was calculated. Electrocardiograms recorded through the Frank lead system and the precordial leads were compared with those synthesized from the scalar product of the dipole moment and the transfer impedances of these leads. The discrepancy between actual and synthesized electro-cardiograms was regarded as the nondipolar fraction of electrocardiogram. This fraction amounted to far higher percentage of electrocardiographic deflection in leads V_2, V_3 and V_4 than in leads V_1, V_5, and V_6 and the Frank lead system. Therefore, it was concluded that leads V_2, V_3 and V_4 contained much information about the nondipolar component of electromotive forces of the heart which was not contained in the Frank lead system.
社団法人日本循環器学会の論文
1967-12-15