Neuro - HY Vascular

Question 1

Middle cerebral a.

Answer 1

lateral surface of brain, basal ganglia, internal capsule

supplies arm/face area sensory/motor strip

Question 2

Anterior cerebral a.

Answer 2

medial surface of brain, some lateral surface

supplies leg area sensory/motor strip

infarct –> contralateral weakness/sensory loss worse in LEGS

Question 3

Posterior cerebral a.

Answer 3

medial surface of occipital lobe (*primary visual cortex and visual association cortex on medial surface. Also inferior surface of temporal lobes and thalamus)

infarct –> contralateral HEMIANOPIA
-bilateral –> cortical blindness (Anton’s)

Question 4

lenticulostriate a.

Answer 4

main blood supply of internal capsule (fibers going to all areas - arm, leg, face)

Question 5

ICA infarct

Answer 5

• Contralateral weakness

- Ipsilateral monocular vision loss (amaurosis fugax)

Question 6

Anterior cerebral artery infarct

Answer 6

• Leg more than arm weakness/sensory deficit

- Language spared

Question 7

Middle cerebral artery infarct

Answer 7

• Arm more than leg weakness/sensory deficit
• Aphasia on left, dysprosody on right
• Contralateral homonymous hemianopia/quadrantanopia
• Gaze deviation towards side of lesion

Question 8

Posterior cerebral artery infarct

Answer 8

• Contralateral homonymous hemianopia

- Alexia without agraphia (left PCA involving splenium)

Question 9

pure motor hemiplegia

Answer 9

internal capsule/ventral pons

Question 10

pure hemisensory loss

Answer 10

thalamus

Question 11

sensorimotor

Answer 11

thalamocapsular

Question 12

Clumsy hand-dysarthria

Answer 12

Internal capsule, ventral pons, or corona radiata

Question 13

Contralateral hemiballismus

Answer 13

SUBTHALAMIC NUCLEUS

or

Ventral pons, internal capsule