What does the anterior cerebral artery supply?
- Medial portions of frontal and parietal lobes
* Corpus callosum
What symptoms would a stroke in the anterior cerebral artery cause?
Contralateral hemiparesis and sensory loss
Lower extremity > upper
What does the middle cerebral artery supply?
• Frontal, parietal and temporal lobe surfaces
What symptoms would a stroke in the middle cerebral artery cause?
Contralateral hemiparesis and sensory loss, upper extremity > lower Contralateral homonymous hemianopia If left, dominant hemisphere affected • Aphasia, dysphasia If right hemisphere affected • Neglect
What does the posterior cerebral artery supply?
• Medial temporal (including hippocampus) and occipital lobes, thalamus and mammillary and geniculate bodies
What symptoms would a stroke in the posterior cerebral artery cause?
Contralateral homonymous hemianopia with macular sparing
Visual agnosia
What is Weber’s syndrome?
Branches of the posterior cerebral artery that supply the midbrain
- Ipsilateral CN III palsy
- Contralateral weakness of upper and lower extremity
What is lateral medullary/Wallenbeg syndrome?
Posterior inferior cerebellar artery
- Ipsilateral: facial pain and temperature loss
- Contralateral: limb/torso pain and temperature loss
- Ataxia, nystagmus
What is lateral pontine syndrome?
Anterior inferior cerebellar artery
• Ipsilateral: facial paralysis and deafness
What happens in a stroke in the retinal/ophthalmic artery?
Amaurosis fugax
What causes locked in syndrome?
Stroke in Basilar artery
Supplies brainstem, cerebellum, posterior cerebral cortex and medial temporal lobes
What is the oxford stroke classification?
- Unilateral hemiparesis and/or hemisensory loss of the face, arm and leg
- Homonymous hemianopia
- Higher cognitive dysfunction (dysphasia, visuospatial disorder)
What is a Total anterior circulation infarct?
- Unilateral hemiparesis and/or hemisensory loss of the face, arm and leg
- Homonymous hemianopia
- Higher cognitive dysfunction (dysphasia, visuospatial disorder)
All 3 of Oxford stroke classification
What arteries does a Total anterior circulation infarct affect?
MCA and ACA
What is a Partial anterior circulation infarct
- Unilateral hemiparesis and/or hemisensory loss of the face, arm and leg
- Homonymous hemianopia
- Higher cognitive dysfunction (dysphasia, visuospatial disorder)
2 of Oxford stroke classification
What arteries does a Partial anterior circulation infarct affect?
Smaller arteries of MCA or ACA
What is a Lacunar infarct
Present with 1 of the following:
• Unilateral weakness (and/or sensory deficit)
• Pure sensory stroke
• Ataxic hemiparesis
What arteries does a Lacunar infarct affect?
Perforating arteries around internal capsule, thalamus and basal ganglia
What is a Posterior circulation infarct?
Presents with 1 of the following:
• Cerebellar or brainstem syndromes
• Loss of consciousness
• Isolated homonymous hemianopia
What arteries does a Posterior circulation infarct affect?
Involves vertebrobasilar arteries
