Lesson 22: Guidelines

A baseline EEG should: (check all that apply) -be run for at least 20 minutes of clean waveforms -be run for at least 30 minutes of clean waveforms -include at least 2 montages -include at least 3 montages -include eyes open -include eyes closed -include HV -include photic

-be run for at least 20 minutes of clean waveforms -include at least 3 montages -include eyes open -include eyes closed

What items should be included in the electronic record? (check all that apply) -patient's name -patient's address -date of the test -admission date -laboratory identification number -patient identification number -diagnosis

-patient's name -date of the test -laboratory identification number -patient identification number

What items, at minimum, should be included on your record? (check all that apply) -patient's name -patient's age -date of the recording -patient's date of birth -patient's ID number -name of the ordering physician -technologist's name -reason for the study

-patient's name -patient's age -date of the recording -patient's ID number -technologist's name

Concerns when using the 10-10 system are: (check all that apply) a. decreases number of studies one technologist can perform b. increases cost c. localization improved d. space in the head box e. source localization

a. decreases number of studies one technologist can perform b. increases cost d. space in the head box

The type of hook-up performed should be entered in which section of the report?

Technical Description

T or F: It is acceptable to use either T6 (from the 10-20 system) or P8 (from the 10-10 system) when naming this electrode.

True

The recommended bandpass for an EEG is: a. 0.5-70Hz b. 0.5-80Hz c. 1-70Hz d. 1-80Hz

a. 0.5-70Hz

In the definition of ECI, the amplitude of any waves in the EEG cannot be above ____ to be considered an ECI recording. a. 2 uV b. 5 uV c. 7 uV d. 10 uV

a. 2 uV

Your LFF should be _____ and your HFF should be ____ on an ECI recording. a. < 1 Hz; > 30 Hz b. > 1 Hz, < 30 Hz c. < 0.5 Hz; > 70 Hz d. > 0.5 Hz; < 70 Hz

a. < 1 Hz; > 30 Hz

Which reference montage is best for temporal lobe epilepsies? a. CZ reference b. average reference c. A1/A2 reference

a. CZ reference

The time from last menstrual period to date of delivery is: a. Gestational Age b. Chronological Age c. Postmenstrual age d. Conceptional age

a. Gestational Age

A low filter that is higher than 1 Hz will: a. attenuate slow frequencies b. attenuate fast frequencies c. distort sharps or spikes d. cause muscle artifact to look like spikes

a. attenuate slow frequencies

Decreasing your sensitivity setting will: a. decrease the amplitude of the wave b. increase the amplitude of the wave

a. decrease the amplitude of the wave

Suggested additional channels of non-EEG information are: (check all that apply) a. heart rate b. respiration c. eye movement d. EMG e. temperature

a. heart rate b. respiration c. eye movement d. EMG

Guideline 5 recommends you run HV when? a. start of the study b. end of the study c. right before sleep d. right after sleep

a. start of the study

When should the state of the patient be documented? (check all that apply) a. start of the study b. end of the study c. when montages are changed d. with activations

a. start of the study c. when montages are changed

The 10-10 system is most useful for: (check all that apply) a. temporal lobe epilepsies b. parietal lobe epilepsies c. frontal lobe epilepsies d. occipital lobe epilepsies

a. temporal lobe epilepsies c. frontal lobe epilepsies

CZ is an important electrode for pediatrics: (check all that apply) a. to capture rolandic sharps b. to capture sleep c. pediatric patients have some seizures that originate at CZ d. to look for phase reversals

a. to capture rolandic sharps c. pediatric patients have some seizures that originate at CZ

How do you test the integrity of the system during an ECI recording? a. touch each electrode and ensure it matches with the appropriate channel on the EEG b. run bio calibration c. run square wave calibration d. decrease the sensitivity and look for low amplitude waveforms

a. touch each electrode and ensure it matches with the appropriate channel on the EEG

There maximum impedance for electrodes is: a. 5 kOhms b. 10 kOhms c. 15 kOhms d. 2.5 kOhms

b. 10 kOhms

An ECI recording should be at least: a. 20 minutes b. 30 minutes c. 45 minutes d. 60 minutes

b. 30 minutes

The line of electrodes between the central and parietal chains is called: a. PC b. CP c. CT d. TP

b. CP

When displayed on the screen, ______ electrodes should appear above ______ electrodes. (check all that apply) a. posterior, anterior b. anterior, posterior c. left, right d. right, left

b. anterior, posterior c. left, right

Changing your sensitivity from 7 uV/mm to 10 uV/mm will: a. increase your waveform amplitudes b. decrease your waveform amplitudes c. attenuate low frequency waves d. attenuate high frequency waves

b. decrease your waveform amplitudes

A younger patient will have a: a. lower voltage b. higher voltage c. lower frequency d. higher frequency

b. higher voltage

Paired electrodes in a montage should be: a. linked to homologous areas of the brain b. linked together in a straight, unbroken line c. should always be linked from from to back d. linked from area of most concern to area of least concern

b. linked together in a straight, unbroken line

What should the interelectrode spacing be during an ECI recording? a. 5 cm b. 7 cm c. 10 cm d. 13 cm

c. 10 cm

At the start of the study: a. 10 seconds of square wave calibration should be performed b. 10 seconds of bio-calibration should be performed c. 10 seconds of square wave calibration and 10 seconds of bio-calibration should be performed d. calibration is not longer required by the guidelines

c. 10 seconds of square wave calibration and 10 seconds of bio-calibration should be performed

The recommended length for a neonatal patient is: a. 30 minutes b. 45 minutes c. 60 minutes d. 90 minutes

c. 60 minutes

A pediatric patient's EEG may be run at: (check all that apply) a. 3 uV/mm b. 5 uV/mm c. 7 uV/mm d. 10 uV/mm

c. 7 uV/mm d. 10 uV/mm

An alternative placement for A1 or A2 in a referential montage is: a. T1 and T2 b. A3 and A4 c. M1 and M2 d. Fp1 and Fp2

c. M1 and M2

When performing a pre-surgical evaluation: a. the 10-20 system can be used b. a full 10-10 system should be used c. a 10-20 system with some additional 10-10 electrodes should be used d. no requirement listed for pre-surgical hook-ups

c. a 10-20 system with some additional 10-10 electrodes should be used

Montages are: a. channels in the differential amplifier b. electrodes paired to each other c. electrodes paired to each other in a systematic and logical arrangement d. grids on the head

c. electrodes paired to each other in a systematic and logical arrangement

Needle electrodes: a. have a lower impedance due to smaller surface area b. have a lower impedance due to larger surface area c. have a higher impedance due to a smaller surface area d. have a higher impedance due to a larger surface area

c. have a higher impedance due to a smaller surface area

What type of sleep is best for pediatric patients? a. sleep deprived b. melatonin induced c. natural d. any sleep is best

c. natural

The reference electrode: a. should be an electrode in the 10 to 20 system b. should be an electrode in the 10 to 10 system c. should not be an electrode in the 10 to 10 or 10 to 20 system d. does not matter where the reference electrode is placed

c. should not be an electrode in the 10 to 10 or 10 to 20 system

T or F: The ECI protocol outlined in Guideline 6 covers all ages of patients.

False

T or F: You should never use a full head hook-up on a neonatal patient.

False

T or F: You should never use a full head hook-up on a neonatal patient..

False

A montage should have at least ____ channels.

16

What is the recommended number of channels necessary to see normal and abnormal EEG patterns?

16

What is the required number of bits for the EEG system?

16 bits

You should run your ECI recording at a sensitivity of_________?

2 uV/mm

How many electrodes are placed in a standard 10-20 system?

21

What is the required sampling rate?

256

How far from the patient should the photic light be placed?

30 cm

A repeat ECI study can be done on an adult patient after what length of time?

6 hours

What electrodes are omitted from an average reference due to artifact contamination? (check all that apply) FP1 FP2 CZ PZ T1 T2 F7 F8

FP1 FP2 F7 F8

T or F: Technical terms should be used in the impression section of the EEG report.

False

Electrode pairs must be balanced because: a. unbalanced electrodes can impact the amplitudes of your waves b. unbalanced electrodes can impact the frequency of your waves c. unbalanced electrodes compromise the ability of the differential amplifier to reject similar signals d. unbalanced electrodes cause an increased shock risk to the patient

c. unbalanced electrodes compromise the ability of the differential amplifier to reject similar signals

Which is the proper name for a transverse bipolar montage with 18 channels in its second derivation? a. 2TB18 b. 18TB2 c. TB18.2 d. TB-18.2

d. TB-18.2

Which of the following is not a contraindication for HV? a. sickle cell b. recent intracranial hemorrhage c. cardiovascular disease d. migraines

d. migraines

The guidelines recommend which types of surface electrodes? (check all that apply) silver silver-silver chloride platinum gold

silver-silver chloride gold