Suga H, Sagawa K
Am J Physiol. 1979 Jun;236(6):H787-9. doi: 10.1152/ajpheart.1979.236.6.H787.
A graphical method is proposed for assessment of ventricular wall circumferential total force and mean stress from the ventricular pressure-volume diagram. A family of force or stress isopleths are first drawn in the pressure-volume plane using a geometric model of the left ventricle and an appropriate version of the Laplace equation. A pressure-volume loop of the ventricle to be analyzed is then drawn in this pressure-volume plane. Total circumferential force in the ventricular wall or its mean circumferential stress can now be read directly from the intersections of the pressure-volume loop with the force or stress isopleths.
本文提出了一种通过心室压力-容积图评估心室壁圆周总力和平均应力的图形方法。首先，利用左心室的几何模型和拉普拉斯方程的适当形式，在压力-容积平面上绘制一族力或应力等值线。然后，在该压力-容积平面上绘制待分析心室的压力-容积环。现在，可以直接从压力-容积环与力或应力等值线的交点读取心室壁圆周总力或其平均圆周应力。
