Diagnosis of Urinary Tract Disease Flashcards
1
Q
what is the rate of passive re-absorption of blood urea affected by?
A
flow of filtrate in tubule
2
Q
what is the range of normal BUN:creatinine ratio in a dog?
A
4-27
3
Q
what can cause an increased BUN:creatinine ratio?
A
gastrointestinal hemorrhage
dehydration
congestive heart failure
renal disease
4
Q
what does most creatinine mostly come from?
A
muscle creatine
5
Q
what are some non-renal diseases that interfere with the kidney’s ability to concentrate urine?
A
osmotic diuresis
medullary washout due to sodium loss, diuresis, or decreased urea
decreased secretion of ADH (diabetes insipidus)
decreased responsiveness to ADH (steroids, hypercalcemia, bacterial toxins)
6
Q
what may be seen before azotemia in nephrotoxicity?
A
casts
7
Q
where do renal enzymes go?
A
urine, not blood stream
