AChA arises from internal carotid artery 2-5mm distal to posterior communicant artery. Supplies zone between striatum anterolaterally and thalamus posteromedially. Terminates at choroid fissure to supply choroid plexus. Supplies optic tract, lateral geniculate body, and posterior limb of internal capsule
Cerebral infarction is brain tissue death due to disrupted blood supply. Main causes include thrombotic or embolic vessel occlusions. Brain degenerates through liquefactive necrosis in response to ischemia
Thrombolysis dissolves blood clots using medication. Used in myocardial infarction, stroke, and severe venous thromboembolism. Main complication is bleeding, which can be dangerous
MCA is largest branch of internal carotid arteries supplying brain's sensory and communication areas. Brain arteries come in symmetrical pairs, each supplying different brain regions
Cerebellar stroke affects blood vessels in brain's lower-back area. Cerebellum controls balance, voluntary movements, and eye movements. Less than 2% of all strokes are cerebellar strokes
tPA is a drug that breaks up blood clots in ischemic stroke. It activates plasminogen to plasmin enzyme for clot breakdown. Stroke death rate in US fell 77% between 1969 and 2013