等圧収縮時における心臓左室の圧ー容積関係

概要

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By extending the eigen stress model and Starling's law of the heart, a viscoelastic mechanical model was proposed for analysing the deformation of ejecting ventricles under constant ejection pressures. The model consisted of time-varying elements (i.e., elastic and contractile element) with a parallel viscous element. Based on this model, a differential equation (was obtained), which expressed the pressure-volume relation of left ventricles. It was found that the viscous coefficient had no dependency on the end-diastolic volume. Numerical results from experiments using 4 dogs showed that the viscous coefficient became a constant value independent of time during isobaric contractions. This model was able to predict the left ventricular volume during isobaric contractions.
一般社団法人日本機械学会の論文
1985-09-25