NUR 416 Lecture Notes - Lecture 9: Etiology, Diazepam, Flickering Lights
31 Mar 2020
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Transient occurrence of signs &/or symptoms d/t abnormal excessive & synchronous neuronal activity in the brain: abnormal # of neurons all activated at the same time, s/sx occur depending on which area of brain is involved. Epilepsy: two or more unprovoked seizures more than 24 hrs apart. Seizures are a symptom of an underlying disease process: infections, intracranial lesions or hemorrhage, metabolic disorders, trauma, brain malformations, genetic disorders, ingestion. These are considered provoked seizures: ex: meningitis provokes a seizure. One seizure occurring does not mean you will have more or go on to develop epilepsy. Abnormal electrical discharges: arising from simultaneous activation of neurons in both hemispheres of the brain, can be restricted to one area of the cerebral cortex. Called focal seizure: can begin in a localized area of the cerebral cortex & spread to other portions of the brain.
