FREE BRPT Advanced Polysomnography Techniques and Protocols Questions and Answers

Question 1

The technician observes muscle artifact in a single EEG channel that shares a common reference with other channels. The appropriate response is:

Accepted Answer

Re-reference the channel showing artifact by changing the input signal derivation to a back-up exploring electrode

Answer

Re-reference the channel showing the artifact to a back-up reference electrode

Answer

Eliminate the artifact by double-referencing the input signal derivation

Answer

Eliminate the artifact by reducing the high frequency filter to 15Hz

Question 2

The preferred method of correcting undesirable artifacts during the recording process is to:

Accepted Answer

Changing the input signal derivations

Answer

Manipulation of low and high filters

Answer

Applying 60Hz notch filters to the artifact channels

Answer

Temporarily manipulating amplifier sensitivity or gain on the channels by the artifact

Question 3

If 60Hz artifact is observed in one of the channels during the bio-cals process, the appropriate action should be:

Accepted Answer

Find the problem source and correct it before beginning the study

Answer

Re-evaluate the problem after the patient goes to sleep

Answer

Re-reference to a back-up electrode, then initiate the study

Answer

Use a 60Hz notch filter to eliminate the artifact

Question 4

What factors come into play when deciding to enter the patients room to correct artifacts?

Accepted Answer

All of the above

Answer

Importance of electrode channel in scoring

Answer

Ease at which patient falls asleep

Answer

Skill at fixing problem without waking patient

Question 5

Double-referencing (A1+A2) may be useful for?

Accepted Answer

Reduce EKG artifact in EEG and EOG Channels

Answer

Reducing 60Hz artifact in EOGs

Answer

Reducing low frequency artifact in EEG channels

Answer

All of the above