MStewart Pre-Med 10+ Year Member 5+ Year Member 15+ Year Member Joined Jan 17, 2005 Messages 418 Reaction score 0 May 24, 2008 #1 Is there is a formula that can get me plasma volume given height weight or body surface area. Reference would be appreciated thanks Members don't see this ad.
Is there is a formula that can get me plasma volume given height weight or body surface area. Reference would be appreciated thanks Members don't see this ad.
kdburton Ulnar Deviant 10+ Year Member 5+ Year Member 15+ Year Member Joined Sep 3, 2005 Messages 1,977 Reaction score 5 May 24, 2008 #2 This is obviously an estimate, but... Total body water = 60% of body weight extracellular fluid = 40% of total body water plasma volume = 20% of extracellular fluid Medical Physiology - Boron and Boulpaep
This is obviously an estimate, but... Total body water = 60% of body weight extracellular fluid = 40% of total body water plasma volume = 20% of extracellular fluid Medical Physiology - Boron and Boulpaep
mjl1717 Senior Member Lifetime Donor Verified Member 20+ Year Member Platinum Member Joined May 24, 2003 Messages 1,647 Reaction score 19 May 24, 2008 #3 Some trivia- As i remember Evans blue is used to measure plasma,,
cpants Member 15+ Year Member Joined Sep 29, 2007 Messages 2,758 Reaction score 463 May 25, 2008 #4 ECF is 20% of body weight. Plasma is 1/4 of ECF. Therefore: Body Weight x .2 x 1/4 ~ Plasma weight Plasma weight/ H20 density will roughly equal plasma volume. Alternatively (and much more accurately): Add a known quantity of Evans blue to the plasma. Allow to equibrilate. V = amount added/final concentration Source: My girl, Costanzo.
ECF is 20% of body weight. Plasma is 1/4 of ECF. Therefore: Body Weight x .2 x 1/4 ~ Plasma weight Plasma weight/ H20 density will roughly equal plasma volume. Alternatively (and much more accurately): Add a known quantity of Evans blue to the plasma. Allow to equibrilate. V = amount added/final concentration Source: My girl, Costanzo.