CVD: STROKE Septemius A. Pansacola RN,MD. ANATOMY OF THE BRAIN. ANATOMIC DIVISION. Two cerebral hemispheres Brain stem Midbrain Pons Medulla cerebellum. Lobes of the cerebral hemisphere. Frontal lobe Planning and sequencing of movement Voluntary eye movement Emotional affect
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Septemius A. Pansacola RN,MD
anterior cerebral artery
extends upward and forward from the internal carotid artery
supplies the frontal lobes, the parts of the brain that control logical thought, personality, and voluntary movement,
Stroke in the anterior cerebral artery results in opposite leg weakness.
Middle Cerebral Artery
largest branch of the internal carotid.
supplies a portion:
lateral surface of the temporal and parietal lobes
includes the primary motor and sensory areas of the face, throat, hand and arm and in the dominant hemisphere, the areas for speech.
artery most often occluded in stroke
Small, deep penetrating arteries which branch from the middle cerebral artery
Posterior cerebral artery
Originates in the
ipsilateral internal carotid artery
supply the temporal and occipital lobes
usually secondary to embolism
vertebral basilar system or heart.
The most common finding is occipital lobe infarction leading to an opposite visual field defect
Arterial anastomosis of vessels that enables the entire brain to reliably vascularized
20% of all strokes
also called a parenchymal hemorrhage
The major risk factor: hypertension
Minute dilations at small artery bifurcation
Occurs: basal ganglia and thalamus
Most signs and symptoms
compression of brain structures and blood vessels.
usually follows the rupture of an aneurysm or an arteriovenous malformation
For diagnosing ischemic stroke in the emergency setting
For diagnosing hemorrhagic stroke in the emergency setting
Internal Carotid stenosis