videos 30,35,43,45

Question 1

The brainstem, cerebellum, and labyrinths are supplied by the

Answer 1

vertebrobasilar arterial system.

Question 2

therapeutic strategies for symptomatic basilar artery stenosis

Answer 2

carotid artery angioplasty and stenting

anticoagulation

Question 3

Review the clinical manifestations of TIAs in the vertebrobasilar circulation

Answer 3

bilateral weakness or clumsiness

bi, shifting, or crossed sensory loss

bi or contra visual field defects

> 2: vertigo, diplopia, dysarthria, dysphagia, ataxia

Question 4

Review the clinical manifestations of TIAs in the carotid circulation

Answer 4

aphasia and dysarthria

ipsi ameurosis fugax

contralateral weakness or clumsiness

contralateral sensory loss

Question 5

Wallenberg syndrome is most often caused by occlusion of the ____ or _____

Answer 5

intracranial segment of the
vertebral artery

less commonly- PICA

Question 6

Wallenberg syndrome (lateral medullary syn)

Answer 6

ipsilateral:
Horner syndrome;
loss of pain and temperature sensation in the face; weakness of the palate, pharynx, and vocal cords;
cerebellar ataxia.

Contralateral:
hemi loss of pain and temperature

Question 7

common associations predisposing to vertebrobasilar dissections

Answer 7

cervical trauma,
vigorous gymnastics,
chiropractic manipulation of the cervical spine

Question 8

Signs and symptoms associated with vertebrobasilar dissections include .

Answer 8

occipital or posterior neck pain,
mastoid pain,
vertebrobasilar TIAs,
variations of the lateral or medial medullary infarction, cerebellar or PCA infarction

Question 9

Pure sensory stroke (pure hemisensory or paresthetic stroke) is characterized by

Answer 9

unilateral numbness,
paresthesias,
hemisensory deficit involving the face, arm, trunk, and leg.

out of proportion to findings

Question 10

what can cause pure sensory stroke

Answer 10

Lacunae in the ventroposterolateral nucleus of the thalamus

ischemic infarctions in the

• corona radiata
• parietal cortex
• subthalamus
• midbrain
• paramedian dorsal pons

Question 11

in pontine pure sensory stroke, what is preserved: vibration/proprio or pain/temp?

Answer 11

pain temp

Question 12

in pure sensory stroke inlovoling thalamus, is pain/temp or vibration/proprio preserved?

Answer 12

no

Question 13

How did a subcortical infarct that ablated the patient’s parkinsonian tremor?

Answer 13

creating deep lesions with either anterior choroidal artery ligation or cryogenic thalamotomy.

Question 14

movements of a parkinsonian tremor

Answer 14

include pronation-supination of the forearm and rhythmic movements with
alternating opposition of the thumb and fingers (pill-rolling).

Question 15

is parkinsonian tremor bilateral or unilateral?

Answer 15

unilateral or asymmetric

Question 16

which body parts does parkinsonian tremor most often affect?

Answer 16

distal limb- hand

chin, jaw, or tongue.

Question 17

triggers and reliefs for Parkinson tremor

Answer 17

tremor abates during sleep

worsens with anxiety and stress.