Effects Of Strokes

Question 1

Patient presents with contralateral paralysis and sensory loss-lower limb, urinary incontinence. Area of lesion affects motor and sensory cortices of the lower limb. What vessel is affected?

Answer 1

Anterior cerebral artery

Question 2

Patient presents with contralateral paralysis and sensory loss-area of lesion affects motor and sensory cortices of the upper limb and face. Temporal lobe (Wernicke area); frontal lobe (Broca area). What vessel is affected?

Answer 2

Middle cerebral artery

Question 3

Wernicke aphasia is associated with right superior quadrant visual field defect due to involvement of what lobe?

Answer 3

Temporal lobe (dominant hemisphere)

Question 4

If a stroke occurs in the dominant hemisphere (usually the left) of the middle cerebral artery, what can occur?

Answer 4

Aphasia

Question 5

If a stroke occurs in the nondominant hemisphere (usually the right) of the middle cerebral artery, what can occur?

Answer 5

Hemineglect

Question 6

This lesion affects the striatum, and the internal capsule.
Patient presents with:
Contralateral paralysis, absence of cortical signs (neglect, aphasia, visual field loss). What artery is affected?

Answer 6

Lenticulostriate artery

Question 7

Common location of lacunae infarcts that cause pure motor stroke. Usually due to microatheroma and hyaline arteriosclerosis due to unmanaged hypertension. What vessel is affected?

Answer 7

Lenticostriate artery

Question 8

The facial nucleus becomes lesioned.
Associated with Lateral Pontine Syndrome.
What is the affected artery?

Answer 8

Anterior Inferior Cerebellar Artery

Question 9

The nucleus ambiguus (CN IX, X, XI) is lesioned. Associated with Lateral medullary (Wallenberg Syndrome).
What artery is affected?

Answer 9

Posterior Inferior Cerebellar Artery

Question 10

Caused by infarct of paramedian branches of ____ artery. Associated with Medial Medullary Syndrome.
What artery is affected?

Answer 10

Anterior Spinal Artery

Question 11

What is being described:
Neuropathic pain due to thalamic lesions. Initial paresthesias followed in weeks to months by allodynia (painless stimuli causes pain) and dysesthesia (altered sensation) on the contralateral side. Occurs in 10% of patients.

Answer 11

Central poststroke pain syndrome

Question 12

Locked in Syndrome
Loss of horizontal, but not vertical, eye movements. Quadriplegia-Loss of voluntary facial, mouth, and tongue movements. Consciousness is preserved if RAS is intact. What artery is affected?

Answer 12

Basilar Artery

Question 13

Contralateral hemianopsia with macular sparing; alexia without agraphia (dominant hemisphere, extending to splenium of corpus callosum); prosopagnosia (nondominant hemisphere).

Answer 13

Posterior Cerebral Artery

Question 14

Traumatic shearing of white matter tracts during rapid acceleration and or deceleration of the brain (MVA). Often causing coma or vegetative state. MRI shows multiple lesions involving white matter tracts. What is being described?

Answer 14

Diffuse axonal injury

Question 15

What artery supplies the following structures:
-Lateral surface of the frontal, parietal, and upper temporal lobes
-Posterior limb and genus of the internal capsule
-Most of the basal ganglia

Answer 15

Middle Cerebral Artery

Question 16

What artery supplies the following structures:
-medial surface of the frontal and parietal lobes, ant. 4/5ths of the corpus callosum, ant. limb of internal capsule

Answer 16

Anterior Cerebral Artery

Question 17

What artery supplies the following structures:
-Occipital lobe, lower temporal lobe, splenium, and midbrain.

Answer 17

Posterior Cerebral Artery