Graphical estimation of ventricular wall force and stress from pressure-volume diagram.
Graphical estimation of ventricular wall force and stress from pressure-volume diagram.
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根据压力-容积图对心室壁力和应力进行图形估计。
DOI：
10.1152/ajpheart.1979.236.6.h787
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发表时间：
1979
期刊：
影响因子：
--
通讯作者：
K. Sagawa
中科院分区：
文献类型：
--
作者：
H. Suga;K. Sagawa
本文提出了一种由心室压力-容积图计算心室壁周向合力和平均应力的图解方法。首先使用左心室的几何模型和适当版本的拉普拉斯方程在压力-容积平面中绘制力或应力等值线族。然后在该压力-容积平面中绘制要分析的心室的压力-容积环。心室壁中的总周向力或其平均周向应力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。
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.