Page 12, Turbulence & Rheology, Dr. D. Penney

Erythrocyte / Plasma Inhomogeneity (continued..)

Finally, the mean circulatory hematocrit is that hematocrit which can be computed by knowing the total blood volume and the total erythrocyte volume. The ratio of the mean circulatory hematocrit to the central hematocrit in humans is approximately 0.9, which means that the central hematocrit is a little higher than the mean circulatory hematocrit. This has ramifications for emergency medicine. When people lose blood during hemorrhage, they lose it mainly from their central blood pool. This being the case, a greater proportion of the bodies' erythrocytes are lost than might be expected.

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