EEG

Question 1

What is burst suppression?

Answer 1

Burtsts of 8-12Hz electrical activity lasting 1-10s that diminish to 1-4Hz prior to intervalls of electrical silence.

Question 2

EEG pattern of acute focal cerbebral insult?

Answer 2

Periodic lateralizing EP discharges - PLEDs

Question 3

EEG pattern of Subacute sclerosing panencephalitis?

Answer 3

Periodic high voltage with 4-15s separation with accompanying body jerks. No change with painful stimulation.

Question 4

EEG pattern of Creutzfeldt Jacob disease

Answer 4

Myoclonic jerks. EEG show bilateral sharp waves 1.5-2 per second. Reactive to painful stimuli.

Question 5

What is triphasic waves?

Answer 5

Noone knows. Seen in hepatic encephalopathy, post-anoxia, hyponatremia

Question 6

How can EEG be used to differentiate hydranencephaly to hydrocephalus?

Answer 6

By finding, unnormal but existing pattern in hydrocephalus pt.