Intravascular volume status

Volume contraction of intravascular fluid (blood plasma) is termed hypovolemia.^[1][2]

Using a patient's ideal weight and actual weight, the percent deviation from the desirable weight is found using the following equation:

${\displaystyle \pm \%{\text{ Desirable Weight}}={\frac {{\text{Actual Weight}}-{\text{Desirable Weight}}}{\text{Desirable Weight}}}\times 100}$ Using the deviation from desirable weight, the BV ratio (ml/kg), i.e. Ideal Blood Volume, can be determined. This may be used in the treatment of anemia,^[3] congestive heart failure,^[4] sepsis,^[5] CFS,^[6] Hyponatremia,^[7] Syncope^[8] and more. Blood volume measurement may foster improved patient care^[9] as both a stand-alone and complementary diagnostic tool as a 2011 study suggested a statistically significant increase in patient survival.^[5]