EEG BOARD PREP PRACTICE QUESTIONS AND ANSWERS

What stage of sleep will you find vertex waves? N1 What stage of sleep will you see sleep spindles? N2 What stage of sleep will you see POSTS? N1 What would an EEG look like of someone who has down syndrome? Normal If a patient is becoming "deeper" in a coma, triphasic waves are most likely to do what? Disappear What normal activity can be seen in C3/C4? Mu What is seen most often in children? Rolandic spikes What region do you see Rolandic spikes? central At which conceptal age do you begin to see delta brushes? 32-34 weeks electrocebral inactivity is defined as no EEG activity over what? 2 microvolts Immediately following an absence seizure the EEG will be? normal beta coma most commonly results from what? drug overdose a skull defect will result in what EEG pattern? breech rhythm What feature is most diagnostic of psychogenic PNES? no disruption of the PDR an electrographic seizure is characterized by what activity? episodic rhymes activity What is most useful when determining localization and polarity? montage what normal variant has positive polarity? lambda according to guidelines what is the bandwidth for routine EEGs? 1-70 hz how many millimeters are in one centimeter? 10 mm what is unilateral spikes considered ? focal abnormality what are the 3 best ways to describe EEG patterns and seizures? morphology, location, frequecy what is another name for small sharp spikes ? BETS what makes lambda different from posts? occurs with eyes open are spikes considered abnormal? yes what type of activity will a neonatal seizure show on an EEG? focal rhythmic ativity What montage should be used for an ECI according to guidelines? double distance which filter setting will record the greatest effect on a 70 Hz wave? 70 Hz what is most attenuated by a low filter of 5 Hz .1 Hz what localization is most used in referential montages? amplitude A patient with ms will have what type of EEG? normal what is the value in psychiatric disorders? rules out seizures If a patient has a skull defect it is very important to what? document history When evaluating abnormal discharges what 2 things should you document? level of consciousness and movement what activity will be seen on an EEG 2 days after a transient ischemic attack (TIA) normal With rapidly increasing dosage, which medications will have the most sedative effect on the patient? barbituates What is used to treat infantile spasms? ACTH The main difference between simple partial and complex partial is what? preservation of consciousness The onset of west syndrome is most likely to occur at what age? 4 months