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Neurology Notes

Medicine Notes > Medicine and Surgery Notes

This is an extract of our Neurology document, which we sell as part of our Medicine and Surgery Notes collection written by the top tier of Bristol University students.

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Medicine & Surgery Neurology Corticospinal (pyramidal) system Enables purposive, skilled, intricate, strong and organised movements

Extrapyramidal system

Basal ganglia motor systems Fast, fluid movements that the corticospinal has generated Examples: Parkinson's, Huntington's, Hemiballismus

Cerebellum Coordinates smooth and learned movements initiated by the pyramidal system and in posture and balance Disease leads to unsteady, jerky movements (ataxia)

Stroke & Cerebrovascular Disease 2nd most common cause of death ~9%
Risk factors HTN Smoking DM Heart disease Previous stroke Carotid bruit The pill Hyperlipidaemia Alcoholism Increased clotting

Transient Ischaemic Attacks Sudden loss of function for <24hours Hemiparesis and aphasia are most common

Amaurosis fugax o Sudden loss of vision in one eye o Emboli in the retinal arteries o Evidence of internal carotid artery stenosis

Transient global amnesia o Epispodes of amnesia, lasting several hours o Posterior circulation ischaemia

Cerebral Infarct Occlusion ? ischemia ? infarction Infarction becomes swollen and does not function Commonly: thromboembolism in a middle cerebral artery branch ? infarction of the internal capsule

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