直角二等邊三角座標による心電圖の研究 : 第2報心室優勢について

概要

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The author calculated the vector (θR & φ_A) of the electric charge of 42 mens' heart with L. or R. V. P from the standard EKG when it was on the top of R_<II> and S_<III> or S_I, by means of the orthogonal isosceles triangle coordinates. The direction of the electric axis when it shows the top of S_<III> or S_I, turned more than 50° to the left or right from the top of R_<II>, and φ_A of the former is larger than 30% of φ_A in the case of R_<II>. This seems to mean that in such a heart the time of the stiinulous conduction in one ventricle needs more time than the other. These are not concern with Schlcmka's type-index, or classification of Herrman & Wilson. The author would like to call these EKG as ventricular predominant type which the direction of the electric charge turns to the left or right side more than 50° when the top of R_<II> turns to the top of S_<III> or S_I, and former φ_A is larger than 30% of the later.
社団法人日本循環器学会の論文
1949-09-20