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عمومی::
هماتوکریت
Hematocrit is the sin- gle most important determinant of blood viscosity.14 In healthy humans, variation of the hematocrit within the normal range (33%-45%) probably results in only modest alterations in CBF.
In patients with focal cerebral ischemia, a hematocrit of 30% to 34% will result in optimal delivery of oxygen.
There- fore, viscosity is not a target of manipulation in patients at risk as a result of cerebral ischemia, with the possible excep- tion of those with hematocrit values higher than 55%.
Intravascular volume and hematocrit manipulation.
In addition, the data do not currently justify routine hemodilution (a hematocrit
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