| packed cell volume |
hematocrit: the ratio of the volume occupied by packed red blood cells to the volume of the whole blood as measured by a hematocrit
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| packed cells |
a preparation of blood cells separated from the liquid plasma; "packed cells are given to severely anemic patients in order to avoid overloading the circulatory system with too much fluid"
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| packed cell volume |
(PCV), hematocrit: A laboratory test to monitor the relative number of red blood cells present in the blood. A blood sample is placed in a tiny glass tube and spun in a centrifuge. The cells are heavier than the plasma and are compacted at one end of the tube. After the tube is spun, it is examined and the packed cell volume is determined as the percentage of the red cellular portion relative to the total amount of blood in the tube (ie, remainder being the plasma). ...
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| packed cells |
Red blood cells that have been separated from plasma, used in treating conditions that require red blood cells but not the liquid components of whole blood. This prevents excess hydration of the vascular system.
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| packed cell volume |
The packed cell volume (PCV) or hematocrit (Hct) is a measure of RBC numbers, expressed as a percentage of the total volume of blood. The PCV, by common usage, has become synonymous with the Hct. Traditionally the PCV is obtained by centrifuging an anticoagulated blood sample (spun crit); with automated counters this value is calculated from the measured Mean Corpuscular Volume (MCV) and RBC count. This is the reason that laboratory values may differ slightly from in-clinic values. ...
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