05.05 - Eval of Renal Fxn (Rao) - Prerecorded Flashcards Preview

Renal > 05.05 - Eval of Renal Fxn (Rao) - Prerecorded > Flashcards

Flashcards in 05.05 - Eval of Renal Fxn (Rao) - Prerecorded Deck (23):
1

Uin =

GFR x Pin / UF

2

Water input to kidney is same as

Plasma flow into kidney

2

What is extraction ratio

Percentage of substance removed from plasma

3

How does Plasma Creatinine relate to GFR

Logarithmic, Creatinine not very sensitive = takes a large decrease in GFR to get significant increase in Pcreatinine

3

How does Pcr change after Uninephrectomy

If GFR decreases by half, Pcr doubles

4

If substance is reabsorbed it means what for Clearance

Clearance less than GFR

5

Filtration Rate =

GFR x Px

6

GFR =

Uf x Uin / Pin

7

Mass Flow =

Concentration x Volume Flow

8

If substance X is completely cleared from plasma, Cx =

Total Renal Plasma Flow

10

Rate of Output from kidney depends on

Renal Vein + Lymphatics + Urine

11

Rate of Filtration or Excretion =

Solute Conc. x Volume Flow Rate

11

If substance is secreted it means what for Ex Ratio

Higher

12

Clearance of what substance approximately equals Effective Renal Plasma Flow

PAH

13

If substance is secreted it means what for Clearance

Clearance is greater than GFR

14

Clearance of Inulin essentially =

GFR

15

Cin =

(UF x Uin) / Pin

16

How does Clearance of Creatinine compare to Inulin

A little higher b/c creatinine is secreted

18

Extraction Ratio =

(Ax-Vx)/Ax

19

If substance is reabsorbed it means what for Ex Ratio

Lower

20

Excretion Rate =

UF x Ux

22

Cpah =

Effective Renal Plasma Flow

23

Extraction ratio of PAH

0.9 - 0.95