Renal physiology Flashcards
1
Q
Equation for renal plasma flow (and how do you convert this to RBF?)
A
Clearance PAH = Urine PAH x Urine flow / Plasma PAH
RBF = RPF / 1-HCT
2
Q
Why is PAH used to estimate RBF
A
1) High extraction ratio - almost completely removed by the kidneys via filtration and secretion
2) Not metabolised or excreted by any other organ - the AV concentration difference is equal to renal arteriolar concentration
3
Q
Define glomerular filtration rate
A
4
Q
What is the filtration fraction
A
5
Q
3 ways in which GFR can be measured or estimated
A
6
Q
Why is inulin an ideal substance for estimating plasma clearance (
A
7
Q
A
