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- W2121929523 abstract "Assessment of the magnitude of regional myocardial work requires knowledge of regional fiber stress and fiber shortening. The theoretical development and experimental validation of a method is presented which used values of estimated active and passive fiber stress according to a fluid-fiber model, and measured fiber strain values. This enables the construction of regional stress-strain diagrams, a regional analog of the pressure-volume area model by Suga and co-investigators, which can be linked to regional oxygen consumption. In the left ventricle, either normally or asynchronously activated, the method yields reliable data on strain and active and passive fiber stress. The relation between estimated regional work and myocardial oxygen demand is in quantitative agreement with previously reported relations between global oxygen demand and measured pressure-volume area. During coronary artery occlusion, however, these values were less reliable, which might be due to inaqdequate knowledge of the (passive) material properties of the myocardium." @default.
- W2121929523 created "2016-06-24" @default.
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- W2121929523 date "1998-03-01" @default.
- W2121929523 modified "2023-09-27" @default.
- W2121929523 title "Estimates of regional work in the canine left ventricle" @default.
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- W2121929523 doi "https://doi.org/10.1016/s0079-6107(98)00012-1" @default.
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