Acute Renal Failure ARF

Question 1

Decrease in renal function ?

Answer 1

Acute renal F

Question 2

Hallmark of ARF ?

Answer 2

1. Azotemia
2. Oliguria
3. Inc BUN
4. Inc Cr

Question 3

Normal BUN ?

Answer 3

7-18 mg/dl

Question 4

Normal Cr ?

Answer 4

0.6-1.2 mg/dl

Question 5

Types of ARF ?

Answer 5

1. Prerenal azotemia
2. Postrenal azotemia
3. Intrarenal azotemia

Question 6

Biochemical measurement in prerenal ARF ?

Answer 6

5. Serum BUN:Cr > 15
6. Urine osmolarity > 500 mOsm/kg
7. Tubular function intact
8. FENa < 1%

Question 7

Postrenal ARF

SAME as prerenal ARF

Answer 7

1. dec Blood supply =Cardiac F
2. Azotemia
3. Oliguria
4. dec GFR
5. Serum BUN:Cr > 15
6. Urine osmolarity > 500 mOsm/kg
7. Tubular function intact
8. FENa < 1%

Question 7

Features of Prerenal Azotemia ?

Answer 7

1. dec Blood supply =Cardiac F
2. Azotemia
3. Oliguria
4. dec GFR
5. Serum BUN:Cr > 15
6. Urine osmolarity > 500 mOsm/kg
7. Tubular function intact
8. FENa < 1%

Question 8

Postrenal ARF cause ?

Answer 8

Obstruction of urinary tract downstream from the kidney-Ureters

Question 9

Long standing obstruction in ARF ?

Answer 9

5. Serum BUN:Cr < 15
6. Urine osmolarity < 500 mOsm/kg
7. Tubular function intact
8. FENa > 2%

DEC reabsorption of BUN