08 - evaluation of digestion and intestinal absorption

Question 1

(fecal occult blood)

1. performed in animals w. chronic diarrhea or loose stools, microcytic anemia, a history of GI tumors, or those treated w/ NSAIDs
2. positive test suggests what?
3. may get false pos when?

Answer 1

2. upper GI tract inflammation, ulceration, or neoplasia
3. consuming meats or some vegetables

Question 2

(fecal fat)

1. stain with sudan III or IV on slide and examine
2. presence of undigested fecal fat suggests what?
3. presence of digested fat suggests what?

Answer 2

2. a deficiency in lipase
3. adequate lipase by inadequate absorption

Question 3

(fat absorption test)

1. fast for 12 hours -> feed corn oil -> collect hourly plasma samples for a few hours
2. if you see turbidity of plasma what does this mean?
3. if not repeat and include pancreatic enzymes

if turbid now?

Answer 3

2. absorption of lipid
3. problem with digestion and not absorption

Question 4

(serum TLI)

1. TLI is decreased when?

Answer 4

1. in dogs with exocrine pancreatic insuff (normal in other SI dz)

Question 5

(vit B12 and folate)

1. serum folate dec when?
2. serum vit B12 decreased when?
3. levels in cats with EPI?
4. in dogs w/ EPI?
5. in SI bac overgrowth?

Answer 5

1. malabsorption in proximal SI
2. malabsorption in distal SI
3. both decreased
4. vit B12 dec, folate normal/^
5. B12 dec, folate ^