DrVirgo
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A patient has a hematoma that resulted from trauma to the lateral aspect of his skull. There is an arterial hemorrhage between the dura and the skull. His friends say he has a short loss of consciousness where he collapsed to the ground, and then got up.
The artery that became lacerated in this man is a direct branch of which of the following:
A. Maxillary artery
B. Internal Carotid artery
C. External Carotid artery
D. Anterior Communicating artery
E. Subclavian artery
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| sarika
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a
middle meningeal artery a br of maxillary artery
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| DrVirgo
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Correct! 
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| ed222
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Match
1-epidural a-papilledema
2-subarachnoid b-bitemporal lower quadrantanopia
3-subdural c-third nerve palsy
d-temporal and parietal bone laceration
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| ed222
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In the above, I mean to ask to do the matching?
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| DrVirgo
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Epidural -temporal and parietal bone laceration
Subarach -papilledema (?)
Subdural - third nerve palsy (?)
Good q's. not sure of the last two.
Please post answers.
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| ed222
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Papilledema is caused by subdural hematoma, and third nerve palsy is caused by subarachnoid hemorrhage
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| Doc2378
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Agree with Drvirgo!
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| DrVirgo
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Ed, thanks for the Q's
Can you please explain the following: Papilledema is caused by subdural hematoma, and third nerve palsy is caused by subarachnoid hemorrhage.
how do they occur?
Thanks.
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| ed222
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Usually the anterior communicating artery is involved in Berry aneurism, but also in a small percentage the posterior communicating artery is the cause, and when this happens, third nerve palsy is produced, and a sign is the eyes look down and out.
Increased intracranial pressure due to rupture of the bridging veins causes Choked Disk. Itncan be unilateral, doesn't affect visual acuity or visual field defects. It is a non-inflamatory congestion of the optic disk due to increased intracranial pressure.
I hope I aswer your questions.
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| zaidsuror
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It goes without saying that :
1-epidural hematoma is cause by pariatl and temporal bone laceration
2-subdural hematoma is regarded more dangerous than epidural hematoma simply becuase of it risk of compressing the brain and causing herniation especially transtentorial(ehich in turn cause a-strectching or compression of the 3rd cranial nerve b-compression of the posterior cerebral artery and c-false ipsilateral spastic hemiparesis)
THIS LEAVES US WITH SAH (THE ANURYSM THAT CAUSES IT IS MOST COMMONLY IN THE ANTERIOR COMMUNICATING ARTERY WHICH IS ABOUVE THE OPTIC CHIASM ,SO COULD THIS CAUSE LOWER BITEMPORAL QUADRETOPIA????
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| ed222
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But SAH is also in the psoterior communicating artery. Read the above information that I gave on jan 23.
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