Flashcards in Renal Phys--> Body fluid compartments Deck (15):
What is the plasma solute concentration? Less than or greater than expected? why?
slight less than 300mM because some is bound to albumin
What makes up an anion gap?
Na-(Hco3- + Cl-)
- should be around 10-15
- 140-(25+105)= 10
What is osmolality?
Total free solute (mM)/Kg of solvent
What is osmolarity?
Total free solute (mM)/Liters of solvent
What percent of body is made up of water?
What is responsible for the oncotic pressure?
- about 1.2-1.4mM in solution
- exhibits 25mmHg
What forms the capillary filtration barrier? What interrupts this?
TNF interrupts this in makes caps leaky
What is the common intracellular solute makeup?
Lots of protein
What makes up common extracellular solute?
What is iso-osmotic?
Any soln that has 300mOsoms which is physiologic
- NS, D5, Lactated ringers
What is isotonic?
Any soln that does not change volume of cell
What is isoncotic?
Any soln with 1mM of plasma albumin or 4.5 grams/100ml
Any soln that exibits 25 mmHg to oncotic pressure
What makes up NS and 1/2 ns?
150 and 150 Na:Cl in NS
77 and 77 Na:CL in 1/2NS
What makes up lactated ringers?
130 na, 109 cl, 4 K, 4 Ca and 28 lactate