Clinical manifestations of middle cerebral artery occlusion

Occlusion of middle cerebral artery can be divided into trunk occlusion, cortical branch occlusion and deep perforating branch occlusion. Trunk occlusion can cause common three-sided symptoms, i.e. contralateral hemiplegia, hemisensory disturbance and hemianopia, aphasia in dominant hemisphere, body image disturbance in non-dominant hemisphere, especially severe large-area cerebral infarction, which can show consciousness disturbance or cause cerebral hernia death. Occlusion of the deep perforating branches results in contralateral central isoparesis, hemiparesthesia, contralateral isotropism hemianopia, subcortical aphasia in the dominant hemisphere, manifested as spontaneous speech limitation, low volume, low intonation, etc. Occlusion of the upper half of the cortical branches generally results in contralateral lateral, upper and lower limb paralysis and sensory loss, and occlusion of the lower half of the cortical branches results in contralateral isotropism 1/4 visual field deficit, sensory aphasia or acute confusion, without hemiplegia.