ACNS Guidelines Questions And Answers With Complete Solution

What is the minimal amount of recording time acceptable when performing clinical EEG? correct answer: The baseline record should contain at least 20 minutes of technically satisfactory recording. What is the minimum number of scalp electrodes required when performing clinical EEG? correct answer: All 21 electrodes and placement following the international 10-20 system should be used. What are the appropriate filter settings when performing clinical EEG? correct answer: The LFF should be no higher than 1 Hz and the HFF should be no lower than 70Hz. Why is the use of the 60Hz filter discouraged when performing EEG? correct answer: The 60 Hz filter can distort or attenuate spikes and should therefore only be used when the other measures against 60Hz interference fail. What are the interelectrode impedance requirements when performing a clinical EEG? correct answer: Electrode impedance should not exceed 5000 ohms (5Kohms) What is the correct documentation a clinical EEG record should contain? correct answer: As a minimum the EEG should have the name and age of the patient, the date of the record, an ID number, and the name/initials of the tech.