Diarrhea Symposium Flashcards
Trying not to repeat stuff we've seen... several times already at this point.
1
Q
What causes crypt distortion?
A
Chronic mucosal injury - usu. IBD.
2
Q
What causes melanosis coli?
A
Brown colon mucosa - caused by excessive laxative use damaging mucosa.
(in the case, was in the context of something bulemia-like)
3
Q
What does a positive Guaiac test mean?
A
There’s occult blood in the stool.
4
Q
What things are most likely to cause discreet purulent lesions in the colon?
A
Not UC, probably not bacteria. Viruses Parasites - entameba Aspergillus can do this... (in this case, it was CMV)
5
Q
Can a colon look grossly normal and not be microscopically normal? 2 examples of processes in which this can happen?
A
Yep.
Collagenous colitis
Lymphocytic colitis
(both of which can cause non-osmotic diarrhea)
6
Q
Review: What does the stool osmotic gap tell you about the type of diarrhea someone has?
A
Large gap (>50): Osmotic - something osmotically active is pulling water into the bowels. Small gap: Non-osmotic - can be secretion of electrolytes, or lack of absorption of electrolytes/water.
