等圧収縮時における心臓左室の壁内応力と単位心筋の等二軸応力ーひずみ関係

概要

論文の詳細を見る
Stress distribution in the left ventricular wall during isobaric contractions was determined analytically from the pressure-volume relationship based on the large deformation theory by assuming spherical geometry of the left ventricles. Numerical results from experiments using 4 dogs showed that the hoop strain decreased with time during isobaric contractions, while the hoop stress decreased at first, and then increased after the minimum value. A mechanical model of the unit cardiac muscle fiber was obtained. Based on this model, it was found that the biaxial stress-strain relation of the unit cardiac muscle fiber during isotonic contractions changed with the muscle length at rest, and it was expressed by different curves, depending on the muscle contractions.
一般社団法人日本機械学会の論文
1985-09-25