eeg activations and EEG patient history quiz

What is the primary purpose of EEG activation procedure?

Increase diagnostic yield

Which activation is most effective for provoking absence seizures?

Hyperventilation

Hyperventilation affects the EEG primarily by:

Lowering carbon dioxide and causing cerebral vasoconstriction

The standard duration for hyperventilation during a routine outpatient EEG is

3-5 minute

IPS is most commonly used to evaluate

Photosensitivity

Normal posterior rhtymic EEG response to IPS is called:

Photic driving

A photoparoxysmal response consist of:

Epileptiform discharges

Sleep increases EEG yield because it:

Enhances cortical synchrony

Partial sleep deprivation is most appropriate is:

Outpatient EEG

Eye opening and closure assess:

Background reactivity

Absolute contraindication to hyperventilation:

Recent stroke

Carotid stenosis increases risk during HV due to:

Cerebrovascular disease

HV contraindication includes sickle cell:

Trait

Relative contraindication to HV:

Moyamoya disease

Activations in ICU patients are generally:

Omitted

Which is a precaution for IPS?

Migraine history

History of photic-induced seizures means IPS should be:

Always done

Sleep deprivation should be avoided in:

Medically unstable patients

Painful stimulation in ICU EEG assesses:

Background activity

If an activation is omitted, the technologist must:

Document the reason

EEG history should include event duration and:

Post Ictal state

Prior craniotomy is important due to possible:

Breach rhythm

Medication history is vital for documenting changes in:

Anti seizure meds

Video game triggered seizures suggest need for:

Photic stimulation

Handedness helps with:

Hemisphere lateralization

EEG reason should reflect the clinical:

Question

Activation requiring most cooperation:

Hyperventilation

HV effort is described as poor, moderate, or:

Good

cEEG patient changes must be recorded as:

Annotations

Proper history and activation selection improve:

Diagnostic accuracy