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caloric test - okt3 - ArchivalUser - 05-22-2008

A comatose patient is being evaluated by caloric stimulation of the vestibular apparatus.
Cold-water irrigation of the right external auditory canal leads to deviation of both eyes to the right for 2 min, followed by a slow drift back to the midline. This finding is most consistent
with a lesion in the

A) right labyrinth

B) midbrain

C) medulla

D) pons

E) cerebral hemispheres


0 - ArchivalUser - 05-22-2008

pons/medulla?


0 - ArchivalUser - 05-22-2008

???????


0 - ArchivalUser - 05-22-2008

I'd say pons...


0 - ArchivalUser - 05-22-2008

Can you explain plz, is it a boring post, so many views and nobody tried beside zealot and sam7860.


0 - ArchivalUser - 05-22-2008

pons


0 - ArchivalUser - 05-22-2008

real tough....right vestibular nucleus is involved. So lesion is in pons.

correct me if i am wrong.





0 - ArchivalUser - 05-22-2008

okt3 this is not boring .definitely HY for real exam ..............


0 - ArchivalUser - 05-22-2008

Thanks sunshine and others for trying, I had a qs about caloric test and Rinne in my exam, you are absolutly right it is HY, that is the reason I am sharing.

Try again, pon is not the given answer.

GL


0 - ArchivalUser - 05-22-2008


why wouldnt it be the midbrain?