Why am I having an AV/EEG
1. Classification of seizure type in patients who have epilepsy (routine EEG is equivocal) — only ictal (seizure /spell) recordings can reliably be used to classify seizure type (or types) which is important for selecting the appropriate anti-epileptic drug therapy.
2. Patients who have episodes / spells that may be highly suggestive of epilepsy where history, examination, and routine EEG alone do not resolve the diagnostic uncertainties (routine EEG should be negative with provocative measures).
3. Localization of an epileptogenic focus within the brain to possibly identify appropriate surgical candidates.
4. Ambulatory EEG monitoring may facilitate a differential diagnosis between seizures and syncopal attacks, sleep apnea, cardiac arrhythmias or hysterical episodes.
5. The test may also allow the investigator to identify the epileptic nature of some episodic periods of disturbed consciousness, mild confusion, or peculiar behavior, where resting EEG is not conclusive.
6. It may be useful in documenting seizures that are precipitated by naturally occurring cyclic events or environmental stimuli, which were not reproducible in the hospital or clinic setting.
7. It may also allow an estimate of seizure frequency, which may at times help to evaluate the effectiveness of a drug and determine its appropriate dosage.
8. It may be useful to determine if subclinical seizure activity recurs after the neurologist has decided the patient may try discontinuing their anti-epileptic medication after a prolonged period of being seizure free.