Stroke Sequelae and Mobility Assistance

An ischaemic stroke occurs when a thrombus or embolus obstructs an artery supplying the brain. Neuronal injury begins within minutes because the affected tissue loses oxygen and glucose. A haemorrhagic stroke occurs when a cerebral vessel ruptures; the accumulating blood can injure surrounding tissue, raise intracranial pressure, and distort normal brain function. The lasting effects depend on the area and extent of injury. Damage to motor pathways commonly produces weakness on the opposite side of the body. Cerebellar or brainstem injury may cause severe imbalance, ataxia, diplopia, dysarthria, or difficulty coordinating movement. Injury to other networks can leave aphasia, impaired visual fields, neglect, dysphagia, impaired judgement, slowed processing, or fatigue. These deficits change how a person transfers, walks, eats, communicates, and completes personal care. A patient with left hemiparesis may be unable to control the left knee during standing. A patient with right-hemisphere injury may have enough strength to stand but fail to notice objects or people on the left. The second patient can look physically capable and still be unsafe. A stable deficit is a sequela. A new deficit,...