Fluids (exam 3) Flashcards
what is the total amount of fluids in a male?
female?
60%
55%
total body fluid distribution
2/3 ICF
1/3 ICF
extracellular fluid distribution
75% interstitial fluid
25% blood/plasma
third space
abnormal fluid collections can occur
common spaces are peritoneal cavity and pleural cavity
pleural fluid
osmolality
measure of the total number of particles dissolved in a kilogram of solution
osmolality of ICF compared to ECF
equal!
components of ICF
potassium
other anions
component of ECF
sodium
chloride
bicarbonate
glucose
BUN
concentrations are maintained by
fluid shifts and NaKATPase pump
how to estimate osmolality based on components of a BMP
Osm = (2 x Na) + (Glu/18) + (BUN/2.8)
Tonicity
measure of the effective osmotic gradients between 2 solutions separated by permeable membrane
tonicity is dependent on
concentration of effective osmoses inside and outside the cell
effective osmoles
solutes that cannot freely cross cell membranes
isotonic = _______ leakage
75%
Isotonic crystalloids
0.9% NaCl
Ringer’s Lactate
Plasma-Lyte
Dextrose 5% in water
Hypotonic crystalloids
0.2% NaCl
0.3% NaCl
0.45% NaCl
Dextrose 5% in water
hypertonic crystalloids
3% NaCl
23.4% NaCl