Kidney: Acute Renal Failure Flashcards Preview

Pathology Unit 5 > Kidney: Acute Renal Failure > Flashcards

Flashcards in Kidney: Acute Renal Failure Deck (15):
1

What is the hallmark of ARF?

Azotemia

2

What lab values indicate azotemia?

Inc BUN and Cr

3

Cause of prerenal azotemia?

decreased blood flow to the kidneys

4

BUN: Cr ratio in prerenal azotemia?

>15

5

FeNa in prerenal azotemia?

<1%

6

What causes postrenal azotemia?

obstruction of urinary tract downstream from the kidney

7

BUN: Cr ratio in postrenal azotemia?

>15 early

<15 late (due to tubular damage)

8

FeNa in postrenal azotemia?

2% late

9

"injury and necrosis of tubular epithelial cells"

Acute Tubular Necrosis

10

What is the MOST common cause of intrarenal acute renal failure?

Acute Tubular Necrosis

11

What can cause ATN?

Ischemic or nephrotoxic

12

What is a diagnostic finding in ATN?

Brown granular casts

13

BUN: Cr in ATN?

<15

14

FeNa found in ATN?

>2%

15

What segment of tubules are particilary sensitive?

PT and TaL