バリストカルヂオグラムの基本的分析 (第3報) : バリストカルヂオグラムから心臟の運動量, 平均驅出力, 心搏出量を導き出すことに關する研究

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As from previous report we see that ballistocardiogram is impulse wave in which I and J wave are caused respectively by cardiac recoil and aortic impact and height of I and J wave hardly interfere one another, we can easily calculate the momentum of cardiac ejection from ballistocardiogram.Formula for calculatioh is as follows : momentum of cardiac ejection =K_1(I+J)E or K_2(I+J)√<C> where K_1,K_2 : constant of apparatus E : ejection time C : cardiac cycle When this formula is established, we can deduce from it the formula for calculation of stroke volume as follows : K_1(I+J)E=Impulse =momentum (M×V) =Sv×Vm =Sv×Sv/A×E =Sv^2/A×E so Sv=√<K_1AE^2(I+J)> or K_3√<A(I+J)C> where Sv : stroke volume Vm : mean blood velocity in aorta
社団法人日本循環器学会の論文
1958-09-20