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Flashcards in GI Lab Assessment Deck (19):
1

T/F LFTs may be normal in patient’s who have advanced liver disease

true

2

T/F Abnormal LFTs are only caused by diseases related to the liver

false, can be caused by diseases unrelated to the liver

3

Name the serum aminotransferases that are released into circulation when hepatocytes are injured

Alanine aminotransferase (ALT). Aspartate aminotranferase (AST)

4

Refers to a group of enzymes that catalyze the hydrolysis of organic phosphates. Elevation reflects obstruction to the liver

alkaline phosphatase

5

Produced by heme metabolism

bilirubin

6

relates to only hepatobiliary disease but does not differentiate it obstructive from hepatocellular damage

conjugated bilirubin

7

occurs when conjugated (direct) bilirubin levels are high

bilirubinuria

8

adheres tightly to albumin and does not get filtered by the kidneys

unconjugated bilirubin

9

Becomes elevated in hepatic encephalopathy

ammonia

10

Most accurate method of drawing ammonia level

get an arterial sample

11

What does clay colored stool indicate?

biliary obstruction

12

What does black colored stool indicate?

blood in stool

13

If stool has a tarry color, how much blood is likely to be in the upper GI tract?

> 100mL

14

Sometimes found in stool with parasitic infections (esp amebiasis)

Charcot-Leyden crystals

15

Most common cause of infectious diarrhea

viruses

16

Treatment for C. difficle colitis

metronidazole (Flagyl). 2nd line- ORAL vancomycin

17

2-3 X normal is abnormal and indicates pancreatic problem such as pancreatitis, trauma, tumor, common bile duct stones, penetrating PU

amylase

18

Decreased in marked destruction of pancreas or severe liver damage

amylase

19

Increased in acute pancreatitis, obstruction of pancreatic duct, acute cholecystitis, small bowel obstruction, acute and chronic renal failure, alcohol-ism, DKA, chronic liver disease

lipase