Effects of Strokes Flashcards Preview

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Flashcards in Effects of Strokes Deck (23):
1

What arteries make up the anterior circulation?

- Middle Cerebral
- Anterior Cerebral
- Lateral Striate

2

Middle Cerebral Artery blockage prevents blood flow where?

- Motor Cortex for Upper Limb and Face
- Sensory Cortex for Upper Limb and Face
- Temporal Lobe (Wiernicke's area)
- Frontal Lobe (Broca's)

3

Symptoms of Middle Cerebral artery stroke

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

4

Anterior Cerebral artery blockage prevents blood flow where

Motor cortex- lower limb
Sensory cortex Lower limb

5

ACA stroke symptoms

Loss of motor and sensory in lower limb

6

Lateral Striate Artery supplies what

Striatum, internal capsule

7

Lateral striate artery stroke symptoms

Contralateral hemiparesis

8

Lateral striate artery strokes commonly occur when?

When HTN is unmanaged and you have lacunar infarcts.

9

Posterior Circulation made up by which arteries>

- Anterior Striate Artery
- Posterior Inferior Cerebellar Artery
- Anterior Inferior Cerebellar Artery
- Posterior Cerebellar Artery

10

Anterior Striate Artery supplies blood where

Lateral corticospinal tract
Medial lemniscus
Caudal medulla

11

ASA stroke symptoms

contralateral hemiparesis- lower limbs

contralateral proprioception

Ipsilateral hypoglossal dysfunction

12

ASA stroke commonly bilateral, called Medial medullary syndrome---

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

13

PICA supplies blood where

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

Symptoms of PICA bockage

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

15

What is Wallenburg's syndrome?

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

AICA supplies blood where

Lateral Pons-
- cranial nerve nuclei
- vestibular nuclei
- facial nucleus
- spinal trigeminal nucleus
- cochlear nuclei
- sympathetic fibers

17

Facial nucleus effects are specific to what lesion?

Lateral Pontine Syndrome---AICA lesions
Facial droop means AICA's pooped

18

PCA supplies blood where

occipital cortex

19

PCA stroke symptoms

contralateral hemianopsia with macular sparing

20

Berry Aneurysms most commonly occur where?

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

21

Rupture of a berry aneurysm leads to

subarachnoid hemorrhage or hemorrhagic stroke

22

Berry aneurysms and the optic chiasm?

May compress the optic chiasm and lead to "bitemporal hemianopia"

23

Charcot Bouchard microaneurysm?

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