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10 Cards in this Set
- Front
- Back
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What does the EEG represent?
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The spontaneous electrical activity of the cerebral cortex
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How is the EEG recorded?
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Scalp or surface electrodes
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What is the EEG useful for?
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Detecting cerebral ischemia
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When is an EEG used?
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Carotid endarterectomy, deliberate hypotension, identification of epileptic foci, assessment of coma/brain death
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What are the disadvantages of the EEG?
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Bulky
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How many leads does the BIS have?
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2
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What does a BIS of 0 mean?
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no brain activity
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What level of BIS represents general anesthesia?
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40-60
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What does a BIS of 100 mean?
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Awake
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When is a BIS particularly useful?
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Pts on psych meds
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