Acute Renal Failure CIS Flashcards Preview

RENAL II Exam 3 > Acute Renal Failure CIS > Flashcards

Flashcards in Acute Renal Failure CIS Deck (48)
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1

aleve

NSAID

2

elevated creatinine

represent renal failure**

3

creatinine represents

GFR

4

acute kidney injury

acute renal failure
-50% increased in serum Cr
-increase in serum Cr - 0.3
-reduction in urine output less than 0.5 longer than 6 hours

5

acute or chronic kidney problem?

-sediment
-kidney size
-compare previous Cr

6

acute sediment

active - casts

7

chronic sediment

bland

8

acute kidney size

normal

9

chronic kidney size

small and scarred

10

stigmata for chronic renal failure

-anemia
-hyperPTH
-A/V fistula
-hyperP

11

acute kidney injury

prerenal
renal
post renal

12

renal causes of acute kidney

ischemia
toxic
glomerulonephritis
acute interstitial nephritis
renovascular obstruction

13

endogenous toxins

cause AKI > renal > toxic
-Mg, Hg, light chain, calcium, uric acid

14

hyaline casts

prerenal AKI**

15

muddy brown casts

intrarenal tubular cell injury
-ATN** - acute tubular necrosis

epithelial casts

16

eosinophils

intrarenal - interstitial nephritis

17

RBC casts

glomerularnephritis AKI

18

FeNa

urine Na x plasma Cr x 100 / plasma Na x Urine Cr

19

pre-renal FeNa

<10

20

urine Na

usually looked a for AKI work up

low in pre-renal
high in renal - can't reabsorb

21

prerenal urine Na

<10

22

ATN urine Na

>20

23

toxic injury urine Na

>20

24

renal ultrasound

hydronephrosis
kidney size
cysts
stones
tumors

25

prerenal azotemia

no change to kidney
-hypoperfusion will recover normally

26

causes of prerenal azotemia

shock , dehydration, hemorrhage, sepsis, vomiting, diarrhea, sweating, diuretics, DM, cirrhosis, CHF, hepatorenal syndrome, peritonitis, hepatorenal syndrome, renal a stenosis, embolism

27

meds make prerenal azotemia worse

NSAIDs
ACE (-)
diuretics
contrast dye
tacrolimus
cyclosporine
ARBs

28

urinary sodium >20

think acute tubular necrosis

29

acute interstitial nephritis

with NSAIDs

30

upper GI bleed

can result in very high BUN