1 Flashcards
how much does body fluid make up of total mass of the body?
60%
What percent does the ECF makeup of the total body mass?
20%
What percent does the ICF makeup of the total body mass?
40%
What is the ECF further divided into
Interstitial fluid and blood plasma
What percent does interstitial fluid make up of ECF
75%
What percent does blood plasma make up of ECF
20%
Out of the total water in the body what is the fraction of ECF
1/3
Out of the total water in the body what is the fraction of ICF
2/3
What type of dye is used for blood volume
chromium51 RBCS
What type of dye is used for plasma volume
evans blue dye
protien+ radioactive iodine (I- albumin)
how do you calculate intracellular body fluid voulme
TBW - ECFV
What type of dye is used for extracellular fluid volume
radioactive sodium
inulin
radioactive sodium lothalamate
What type of dye is used for total body water
radioactive water
how do you calculate interstatial volume?
ECFV-Blood plasma
What is the tonicity of a 5% Dextrose solution
Isotonic
What is the tonicity of a Ringer’s lactate solution
Isotonic
What is the tonicity of a 0.9% NaCl (saline)
Isotonic
What is the tonicity of a 0.45% NaCl (saline
Hypotonic
What is the tonicity of a 3% NaCl (Saline)
Hypertonic
What is the tonicity of a 10% dextrose
Hypertonic
What are the four conditions for the indicator dilution method?
1) It rapidly equilibrates in the compartment
2) It disperses evenly throughout the compartment
3) It disperses only in the compartment that is being measured
4) It is not metabolized or excreted
Does water move from the ECF to ICF if there is no change in osmolarity?
NO
Is central diabetes insipidus hypo ot hypertonic?
central diabetes insipidus there would be deficient secretion of antidiuretic hormone
So it will be loss of hypotonic fluid (which will make the ecf hypertonic)
