II-H. Troubleshooting Flashcards
While recording using a bipolar montage, you notice that the channel C4-P4 is unusually flat compared to the other channels. What is a possible cause?
A) The electrodes are too far apart
B) The electrodes are too close together
C) The impedances were too high
D) The electrodes require more paste
The electrodes are too close together
NON-PHYSIOLOGIC ARTIFACT
A) Electrode
B) EMG
C) EOG
D) Glossokinetic
Electrode
Artifact that is caused by movement of people near the patient:
A) Electrostatic artifact
B) EKG artifact
C) 60 Hz artifact
D) Respiration artifact
Electrostatic artifact
What type of physiological artifact is seen in this sample?
A) 60 Hz
B) Muscle artifact
C) EKG artifact
D) Pulse artifact
EKG artifact
60 hertz filter
A) Low Filter
B) Rapid Roll-off Filter
C) Notch Filter
D) Muscle Filter
Notch Filter
If 60 Hz artifact is present in two channels of an EEG tracing, the first step in troubleshooting should be to
A) switch to another power outlet
B) turn on 60 Hz filter
C) check electrode impedance
D) change high frequency filter to 15 Hz
check electrode impedance.
What should be the first reaction to 60 hertz artifact in one electrode?
A) Utilize the high filter
B) Turn on the 60 Hz filter
C) Change the montage
D) Check electrode impedance
Check electrode impedance.
The EEG activity seen continuously and maximally from the frontal leads is best described as:
A) Saw-tooth waves of REM sleep
B) Eye flutter artifact
C) Bifrontal myogenic artifact
D) Artifact that Fp1 and Fp2 (faulty electrodes)
Bifrontal myogenic artifact
Based on the sample, what type of activity is prominent in the T4 electrode?
A) Pulse artifact
B) Electrode pop artifact
C) Ventilator artifact
D) Sweat artifact
Electrode pop artifact
Broken lead wire during a recording:
A) can cause a dangerous leakage current
B) can be corrected using a software patch
C) requires replacement
D) not important, since the system reference can still be used as input twoWhile
requires replacement
