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Step 1 Neurology > Herniation Syndromes > Flashcards

Herniation Syndromes Flashcards

1
Q

Cingulate (subfalcine) herniation under falx cerebri

A

can compress anterior cerebral artery

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2
Q

Downward transtentorial (central) herniation

A

caudal displacement of brain stem –> rupture of paramedian basilar artery branches –> duret hemorrhages.

Usually fatal.

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3
Q

Uncal herniation

A

Uncus = medial temporal lobe.

Compress ipsilateral CN III (blown pupil, down and out gaze

ipsilateral PCA (contralateral homonymous hemianopia with macular sparing)

contralateral crus cerebri at the Kernohan notch (ipsilateral paresis; “false localization sign”)

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4
Q

Cerebellar tonsillar herniation into the foramen magnum

A

coma and death result when these herniations compress the brain stem

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Step 1 Neurology (3 decks)

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