Systolic geometry: Difference between revisions

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'''Blood volume''' is the [[volume]] of [[blood]] (both [[red blood cell]]s and [[blood plasma|plasma]]) in the [[circulatory system]] of any individual.
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==Humans==
A typical adult has a blood volume of approximately between 4.7 and 5 litres, with females generally having less blood volume than males.<ref>{{cite web|url=http://hypertextbook.com/facts/1998/LanNaLee.shtml|title=Volume of Blood in a Human|work=The Physics Factbook|first=Lan Na|last=Lee|year=1998}}</ref> Blood volume is regulated by the [[kidney]]s.
 
Blood volume (BV) can be calculated given the [[hematocrit]] (HC; the fraction of blood that is [[red blood cell]]s) and plasma volume (PV):
:<math>BV = \frac{PV}{1-HC}</math>
 
Diagnostic technologies are commercially available to measure human blood volume. A recent radionucleotide study called BVA-100, Blood Volume Analysis is the only FDA approved instrument that provides a measure of Red Blood Cells and Plasma with 98% accuracy.
 
Blood volume measurement is indicated for the diagnosis and treatment patients suffering from [[Congestive Heart Failure]], [[Chronic hypertension]], [[Renal Failure]] and Critical Care.
 
==Other Animals==
{|class="wikitable" align="right"
! Animal !! Blood volume<br> (ml/kg)<ref name=drexel/>
|-
| [[Cat]] || 55 (47-66)
|-
|  [[Cow]] || 55 (52-57) <ref>Reynolds, Monica ; Plasma and Blood Volume in the Cow Using the T-1824 Hematocrit Method
[[American Journal of Physiology]] - June 1953 vol. 173 no. 3 421-427</ref>
|-
| [[Dog]] || 86 (79-90)
|-
| [[Ferret]] || 75
|-
| [[Gerbil]] || 67
|-
| [[Goat]] || 70
|-
| [[Guinea pig]] || 75 (67-92)
|-
| [[Hamster]] || 78
|-
| [[Circulatory system of the horse|Horse]] || 76
|-
| [[Rhesus monkey|Monkey (rhesus)]] || 54
|-
| [[Mouse]] || 79 (78-80)
|-
| [[Pig]] || 65
|-
| [[Rabbit]] || 56 (44-70)
|-
| [[Rat]] || 64 (50-70)
|-
| [[Sheep]] || 60
|-
| [[Marmoset]] || 60-70<ref>Wolfensohn & Lloyd, 2003, Handbook of Laboratory Animal Management and Welfare, 3rd Edition</ref>
|}
The table at right shows circulating blood volumes, given as volume per kilogram, for healthy adults of a selection of animals.<ref name=drexel>[http://www.drexelmed.edu/documents/ULAR/IACUC_drugs.pdf A Compendium of Drugs Used for Laboratory Animal Anesthesia, Analgesia, Tranquilization and Restraint] at Drexel University College of Medicine. Retrieved April 2011</ref> However, it can be 15% less in obese and old animals.<ref name=drexel/>
 
==See also==
* [[Volume status]]
* [[Hypovolemia]]
* [[Hypervolemia]]
 
==References==
{{reflist}}
 
==External links==
* http://www.cvphysiology.com/Blood%20Pressure/BP025.htm
 
{{Cardiovascular physiology}}
 
{{DEFAULTSORT:Blood Volume}}
[[Category:Blood]]
 
{{circulatory-stub}}

Latest revision as of 20:28, 28 May 2014

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