Abstract
Increased hematocrit above normal levels is usually associated with the elevation of mean systemic arterial blood pressure (MAP) due to increased blood viscosity as shown in studies where hematocrit was increased by 40 % or more above baseline [1, 2]. This effect is related to the behavior of pressure in rigid tubes subjected to constant flow, in the presence of varying viscosity. Clinically and physiologically, this situation is encountered with pathologically high hematocrits [3] and in individuals adapted to high altitude with hematocrit levels of 75–91 % [4]. Moderate hematocrit changes (and, therefore, changes in blood viscosity) due to variability in the normal population do not appear to affect MAP.
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Salazar Vázquez, B.Y., Cabrales, P., Intaglietta, M. (2008). The Beneficial Effects of Increasing Blood Viscosity. In: Yearbook of Intensive Care and Emergency Medicine. Yearbook of Intensive Care and Emergency Medicine, vol 2008. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-77290-3_64
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DOI: https://doi.org/10.1007/978-3-540-77290-3_64
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