9. BUN and Creatinine

Question 1

gives rough measurement of renal function

Answer 1

Blood Urea Nitrogen

Question 2

free ammonia from protein metabolism is combined in the liver to yield

Answer 2

urea

Question 3

urea is normally excreted from the

Answer 3

kidney (via urine)

Question 4

increase in nitrogenous products in the blood

Answer 4

azotemia

Question 5

Pre-renal causes of azotemia

Answer 5

Excessive protein catabolism, CHF, Shock, and Dehydration

Question 6

two causes of Dehydration Prerenal Azotemia?

Answer 6

1. Decreased blood volume or decreased renal circulation

2. increased protein intake or endogenous catabolism

Question 7

from chronic diffuse bilateral disease or damage

Answer 7

renal azotemia

Question 8

from Acute Tubular Necrosis due to hypotension or shock

Answer 8

renal azotemia

Question 9

caused by ureteral obstruction, BPH, or bladder tumors

Answer 9

postrenal azotemia

Question 10

by product of creatine phosphate dephosphorylation in skeletal muslce

Answer 10

creatinine

Question 11

depends on muscle mass so has very little daily fluctuations

Answer 11

creatinine

Question 12

creatinine is only elevated by ______, and minimally elevated by ________

Answer 12

renal disorders, liver function

Question 13

creatinine rises later and slower than ____, which suggests a chronic problem

Answer 13

BUN

Question 14

creatinine is increased in

Answer 14

decreased renal function, rhabdomyolysis, and gigantism/acromegaly