EEG Pattern Recognition

2. A pattern of stereotyped bursts, usually consisting of mixed frequencies with or without intermixed epileptiform discharges. the bursts usually last 2-10 seconds and are separated by intervals of suppression that demonstrate no electrocerebral activity at normal sensitivities.

Electrocerebral inactivity

Burst Supression

PLEDS

Paroxysmal Seizure

K Complex

3. An EEG will always appear abnormal if the brain is functioning abnormally?

True

False

Although acute, severe, and anatomically large abnormalities of the brain are likely to cause EEG abnormalities, normal EEG's may be seen in cases with small lesions or in others with long-standing, mild and limited cerebral abnormalities.

Explanation

Although acute, severe, and anatomically large abnormalities of the brain are likely to cause EEG abnormalities, normal EEG's may be seen in cases with small lesions or in others with long-standing, mild and limited cerebral abnormalities.

4. Electrocerebral inactivity is defined as no cerebral activity greater than _______ microvolts.

1

2

4

7.5

9

5. Sodium Amytal is used for:

Truth Serum

Wada Test

Cerebral angiogram

To induce Seizures

6. Which of the following medications can commonly cause increased theta and beta activity at therapeutic doses?

Antidepressants

Chloral hydrate

Analgesics

Antihistamines

7. Increased amounts of beta can be caused by:

Dilantin toxicity

Therapeutic doses of barbiturate

Pyridoxine deficiency

Hyperthyroidism

8. Increased Beta in the EEG may be caused by which of the following?

Diazepam

Phenytoin

Cimetidine

Amitriptyline

Lorazepam

9. The most common waveform associated with encephalopathies are ___________ waves.

Biphasic waves

PLEDS

3Hz spike and slow wave

Triphasic

Sharp

10. Electrocerebral inactivity is defined as no cerebral activity greater than _______ microvolts and a verified electrode impedance with all electrodes testing between _______ to ______ ohms.

4 microvolts; 100-10,000 ohms

7.5 microvolts; 100-30,000 ohms

2 microvolts; 100-5000 ohms

2 microvolts; 100-10,000 ohms

4 microvolts; 100-5000 ohms

11. The drug phenytoin (Dilantin) will have little effect on the EEG at therapeutic levels, however, when approaching toxic levels the drug can cause what EEG change?

An increase in Beta

A slowing of the background alpha

Frontal delta

Bursts of temporal theta

12. At what conceptual age can wake and sleep first be differentiated?

24 weeks

32-33 weeks

38-40 weeks

All Ages

13. Phenytoin (Dilantin) toxicity causes the EEG to show?

No change

Asymmetric alpha rhythm

Increased frontal beta activity

Increased geralized theta activity

Frontal slowing

14. Which syndrome presents seizures in 3/4th of its' patients and is observed as continuous spike and wave during slow sleep and consistent ictal epileptiform dicharges while awake.

Lennox-Gastaut

Rankin Disease

Landau Kleffner

Tuberosclerosis

West Syndrome