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Flashcards in Liver Tests Deck (17):
1

Test 1

Chug a beer
10 pushups
chug a second beer 15 jumping jacks
NO PUKING

2

You need _ % loss of fx to see liver changes?

70

3

2 general types of liver test?

direct
add on tests

indirect
part of routine chem panel

4

What are the two direct tests of liver fx?

Bile acids and Ammonia

5

How do you test for BA

Dogs/cats must fast for 12 hours, baseline, test 2 hours after eating

Horse/Rmt single measuremt

6

What are the 2 major pathologic processes that increase BA?

decreased clearance
loss of fx hepatocytes/recircualtion issue
shunt

decreased excretion of BA
cholestasis

7

when dont you run BA?

to test fx liver mass if cholestasis is suspected

8

When is ammonia tolerance test contraindicated?

if ammonia is already high

9

What causes hyperamonemia?

hepatic insufficiency

shunts- tolerance test indicated

urea cycle ez def- rare rare rae


RMT urea toxicosis

MAY SEE Ammonia biurate crystals

10

What is hepatic encephalopathy?

result of toxic levels of plasma ammonia

neuro signs

most severe after eating

11

What are the indirect liver tests?

glucose
outside ref interval

cholesterol
decreased

albuimin
decreased

BUN
decreased

Bilirubin
increased

12

What is hepatic photosensitivity?

phylloerythrin breakdown from chorophyll, removed by hepatocytes

enters circ, accumualtes in skin

+sun = free radicals leading to inflamm, unpig/hairless skin affected

13

T/F microcyotis/codocytes can result from decreased heaptic mass

TRUE

14

What indicates hepatic lipidosis

CATS
hyperbilirubinemia
increased ALP/GGT
+/- hyperammonemia

15

What indicates cholangitis, cholangiohepatitis, or extra hepatic biliary dz?

increased BA
hyperbilirubinemia
increased ALP/GGT
increase in leakage ez
hypercholesterolemia
prolonged PT/PTT
steatorrhea

16

What indicates a shunt?

Increased BA/ammonia

Ammonia biurate crystalluria

leakage, cholestatic ez/ bilirubinemia WNL

17

What indicates corticosteroid hepatopathy?

gylcogen storage = swelling

increased leakageez

ALP MARKED INCREASE
Cholestasis indicators from swelling

others WNL