Effects of Strokes Flashcards Preview

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Flashcards in Effects of Strokes Deck (23)
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1
Q

What arteries make up the anterior circulation?

A
  • Middle Cerebral
  • Anterior Cerebral
  • Lateral Striate
2
Q

Middle Cerebral Artery blockage prevents blood flow where?

A
  • Motor Cortex for Upper Limb and Face
  • Sensory Cortex for Upper Limb and Face
  • Temporal Lobe (Wiernicke’s area)
  • Frontal Lobe (Broca’s)
3
Q

Symptoms of Middle Cerebral artery stroke

A

Contralateral paralysis in upper limb and face
Contralateral sensory loss in upper limb and face
Aphasia if in dominant hemisphere.

4
Q

Anterior Cerebral artery blockage prevents blood flow where

A

Motor cortex- lower limb

Sensory cortex Lower limb

5
Q

ACA stroke symptoms

A

Loss of motor and sensory in lower limb

6
Q

Lateral Striate Artery supplies what

A

Striatum, internal capsule

7
Q

Lateral striate artery stroke symptoms

A

Contralateral hemiparesis

8
Q

Lateral striate artery strokes commonly occur when?

A

When HTN is unmanaged and you have lacunar infarcts.

9
Q

Posterior Circulation made up by which arteries>

A
  • Anterior Striate Artery
  • Posterior Inferior Cerebellar Artery
  • Anterior Inferior Cerebellar Artery
  • Posterior Cerebellar Artery
10
Q

Anterior Striate Artery supplies blood where

A

Lateral corticospinal tract
Medial lemniscus
Caudal medulla

11
Q

ASA stroke symptoms

A

contralateral hemiparesis- lower limbs

contralateral proprioception

Ipsilateral hypoglossal dysfunction

12
Q

ASA stroke commonly bilateral, called Medial medullary syndrome—

A

caused by the infarct of paramedian branches of ASA and vertebral arteries

13
Q

PICA supplies blood where

A

Remember the PICA comes off of the vertebral arteries pretty low…supplies blood to the lateral medulla, so:
vestibular nuclei, lateral spinothalamic tract, spinal trigeminal, nucleus ambiguus, sympathetic fibers, inferior cerebellar peduncle

14
Q

Symptoms of PICA bockage

A

Vomitting, vertigo, nystagmus,
Decreased pain and temp to face and limbs
dysphagia, hoarseness
ipsilateral horners

15
Q

What is Wallenburg’s syndrome?

A

Lateral medullary syndrome-

Nucleus ambiguus effects are specific to what lesion?

PICA….Don’t PICA Horse (hoarseness) that can’t eat (dysphagia). Both a result of nucleus ambiguus

16
Q

AICA supplies blood where

A

Lateral Pons-

  • cranial nerve nuclei
  • vestibular nuclei
  • facial nucleus
  • spinal trigeminal nucleus
  • cochlear nuclei
  • sympathetic fibers
17
Q

Facial nucleus effects are specific to what lesion?

A

Lateral Pontine Syndrome—AICA lesions

Facial droop means AICA’s pooped

18
Q

PCA supplies blood where

A

occipital cortex

19
Q

PCA stroke symptoms

A

contralateral hemianopsia with macular sparing

20
Q

Berry Aneurysms most commonly occur where?

A

At bifurcations in the Circle of Willis- most commonly at the bifurcation of the anterior comunicating artery.

21
Q

Rupture of a berry aneurysm leads to

A

subarachnoid hemorrhage or hemorrhagic stroke

22
Q

Berry aneurysms and the optic chiasm?

A

May compress the optic chiasm and lead to “bitemporal hemianopia”

23
Q

Charcot Bouchard microaneurysm?

A

associated with chronic hypertension. Affects small vessels in the basal ganglia and thalamus.