Chapter 75 - blood purification for intoxications and drug overdose Flashcards
1
Q
what are the two main mechanisms of solute removal in renal replacement therapy?
A
diffusion, convection (aka ultrafiltration)
2
Q
describe diffusion in the context of renal replacement therapy
A
movement of solute across a semi-permeable membrane driven by transmembrane concentration gradient
3
Q
describe convection (or ultrafiltration) in the context of renal replacement therapy
A
movement of water and resultant solvent drag occurring over a permeable membrane due to the transmembrane pressure gradient
4
Q
which mechanism of solute removal works better for small molecules?
A
diffusion
5
Q
which mechanism of solute removal works better for large molecules?
A
convection