A theoretical analysis of red cell motion in capillaries, assuming axisymmetric cell shapes, predicts cell shapes and apparent viscosities which are in good agreement with experimental data. At high cell velocities, the stress in the red cell membrane may be approximated by isotropic tension, and apparent viscosity is nearly independent of velocity. At lower cell velocities, shear and bending stresses become increasingly significant, and apparent viscosity increases with decreasing flow rate. For vessel diameters ranging from 4 mu m to 7 mu m, apparent viscosity at a given hematocrit is not strongly dependent on vessel diameter, despite very marked changes in red cell shape.
|Original language||English (US)|
|Number of pages||2|
|State||Published - 1986|
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