Khairulorama- Life and work notes

Pain is the predecessor of success.

Posterior communicating artery aneurysm

with 2 comments

PCOM. I kept forgetting this important to look for diagnosis. I have been reading this multiple times .

350px-daguerreotype_ptosis_william_bell_army_medical_museum

eyepalsy-14-cranialnervepalsypcom_infundibulum

from http://neuroangio.org/anatomy-and-variants/posterior-communicating-artery/

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Clinical signs

If the pupil is large on one side of the eye, Isolated cranial nerve III palsy

the parasympathetic fibres of the cranial nerves III are arranged on the outer surface as compared to the motor fibers. Therefore an external compression would cause dilated pupil but not in the case of medical cranial nerve III due to mononeuritis.

5583_fig. 6.20

 

iiipalsyptosis

 

 

 

Written by khairulorama

July 15, 2016 at 7:07 pm

Posted in MRCP, Uncategorized

2 Responses

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  1. Miss_Kymmiee

    July 15, 2016 at 7:36 pm

  2. Add

    If the pupil us affected then this suggest involvememt of the parasymphathetic nerve fibres that originate from the edinger westphal nuclues.

    This often results from extrinsic compressive lesions as these autonomic fibreas are situated very superficially in the nerve trunk and if the pupil is affected it is temed surgical 3rd nerve palsy.

    If spared termed medical 3rd nerve palsy

    khairulorama

    July 16, 2016 at 12:36 pm


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