![]() ![]() ![]() When the hematocrit rises to 60 or 70, which it often does in polycythemia, the blood viscosity can become as great as 10 times that of water, and its flow through blood vessels is greatly retarded because of increased resistance to flow. The viscosity of blood after this shear rate is reached is about five times as great as the viscosity of water. Until this point is reached the term viscosity cannot be applied to blood. The fluid must reach a shear rate of about 100 to be assumed Newtonian. The plasma contains the dissolved proteins, clotting factors, and other suspended materials in water. However, plasma can be considered a Newtonian fluid, but blood cannot due to the red blood cells which add non-idealties to the fluid. What is Plasma Viscosity Plasma Viscosity, gives a measure of the acute phase response i.e. The viscosity of blood thus depends on the viscosity of the plasma, in combination with the hematocrit. The viscosity of blood influences at least three variables: its propensity to clot, perfuse tissue, and vascular resistance. Of note, the viscosity of blood increases with increasing hematocrit and decreasing temperature, hence one the rationales for fluid warmers: Warming and. Physicians also may prescribe medicine for this conditions, including stroke, impotence, male infertility, Raynaud's disease, and nerve and circulation problems caused by diabetes.īlood is a liquid that consists of plasma and particles, such as the red blood cells. Viscous Blood can cause painful leg cramps or leg pain caused by poor circulation, a condition called intermittent claudication. As a physical property, it determines the. It is measured as a physical property of a fluid. Freebase (5.00 / 1 vote) Rate this definition:īlood viscosity is a measure of the resistance of blood to flow, which is being deformed by either shear or extensional strain. Viscosity refers to the state or condition of being viscous. ![]()
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