Encephalopathy electroencephalogram: Difference between revisions
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Revision as of 12:43, 12 July 2020
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Encephalopathy |
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Diagnosis |
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Treatment |
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Encephalopathy electroencephalogram On the Web |
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American Roentgen Ray Society Images of Encephalopathy electroencephalogram |
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Risk calculators and risk factors for Encephalopathy electroencephalogram |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] ; Associate Editor(s)-in-Chief: Aditya Govindavarjhulla, M.B.B.S. [2]
Overview
EEG is a test of cerebral function, it indicates any generalized or focal dysfunction of brain. Generalized slowing of EEG waves is seen in diffuse encephalopathies. It helps in differentiating in epileptiform encephalopathies and epilepsy conditions.
Electroencephalogram
- Generalized slowing - diffuse encephalopathies
- Generalized periodic epileptiform discharges[1]
- Low voltage activity is seen all over the brain
- Triphasic waves can be seen in few cases
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| EEG characteristics in METABOLIC and ENDOCRINE disorders | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Metabolic Abnormality | Posterior Background Rhythm | Theta/Delta Activity | Fast Activity | Reactivity | Response to photic stimulation | Periodic Delta | Periodic Sharp waves | FIRDA | PLEDS | TWs | Epileptiform activity | NCSE |
| Hyperthyroidism | fast | increased | excessive | prolonged high voltage | x | x | x | |||||
| Hypothyroidism | slow | increased-low voltage | poor | x | x | |||||||
| HYpercortisolism | slow | increased | excessive | x | ||||||||
| Hypocortisolism | slow | increased-high voltage | decreased | x | ||||||||
| Hyperglycemia | slow | increased-high voltage | excessive | x | x | x | x | |||||
| Hypoglycemia | slow | increased | x | x | x | |||||||
| Hyponatremia | slow | increased-high voltage | x | x | x | x | x | x | ||||
| Hypercalcemia | slow | increased-high voltage | x | x | x | x | ||||||
| Hypocalcemia | slow | increased-high voltage | x | x | ||||||||
| Hypomagnesemia | slow | increased-focal | x | |||||||||
| Thiamine deficiency | slow | increased-low voltage | poor | x | ||||||||
| Porphyria | slow | increased-high voltage | x | |||||||||
References
- ↑ Faigle R, Sutter R, Kaplan PW (2013). "Electroencephalography of encephalopathy in patients with endocrine and metabolic disorders". J Clin Neurophysiol. 30 (5): 505–16. doi:10.1097/WNP.0b013e3182a73db9. PMC 3826953. PMID 24084183.