1999
DOI: 10.1007/bf02941247
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Relationship between power law coefficients and major blood constituents affecting the whole blood viscosity

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Cited by 52 publications
(32 citation statements)
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“…Empirical power laws, which are often used to describe velocity profiles in arterioles (5,19,22,24), do not account for changes in the rheological properties of blood caused by Hct variations. To accommodate this phenomenon, we modeled blood as an inhomogeneous (33,35) fluid that exhibits both a nonuniform radial distribution of Hct in the vessel lumen (24,34,44) and a cell-free layer near the blood vessel wall (21).…”
Section: Resultsmentioning
confidence: 99%
“…Empirical power laws, which are often used to describe velocity profiles in arterioles (5,19,22,24), do not account for changes in the rheological properties of blood caused by Hct variations. To accommodate this phenomenon, we modeled blood as an inhomogeneous (33,35) fluid that exhibits both a nonuniform radial distribution of Hct in the vessel lumen (24,34,44) and a cell-free layer near the blood vessel wall (21).…”
Section: Resultsmentioning
confidence: 99%
“…a Maximum WSS within sac, b mean velocity, and c viscosity-shear rate relationship low and critically low WSS regions. There appears to be some consensus that the power law consistency index for blood should be in the region of 0.017 kg s n-2 m -1 [10,28,35]. However, this is not universal, with Johnston et al [21] using a larger consistency index offset with a lower power index (k = 0.035 kg s n-2 m -1 , n = 0.6).…”
Section: Blood Viscosity Modelingmentioning
confidence: 92%
“…Hct is the percentage of the packed volume of RBC and therefore it contributes to blood viscosity. This parameter includes not only the effect of the packed cell volume of RBC but also other important physical parameters, namely aggregability, deformability and rigidity, or internal viscosity of RBC [26, 38, 39]. These physical parameters in turn are affected by the alteration in the concentration of biochemical factors in plasma.…”
Section: Discussionmentioning
confidence: 99%
“…The factors that affect whole blood viscosity are shear rate, Hct, plasma viscosity, RBC deformability and RBC aggregation [9, 14, 38]. From the hemorheological perspective Hct has a large effect on blood viscosity; in conditions where Hct is increased, viscosity of the blood increases as well.…”
Section: Discussionmentioning
confidence: 99%