12th Grade Healthcare Quizzes, Questions & Answers

12th Grade

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Artifact Recognition & Correction - Polysomnography

This quiz focuses on recognizing and correcting artifacts in polysomnography. It assesses skills in EEG interpretation, troubleshooting signal interference, and optimizing sleep study recordings. Essential for technicians in...

Questions: 12 | Attempts: 1456 | Last updated: Mar 21, 2025

Sample Question 1
The technician observes muscle artifact in a single EEG channel that shares a common reference with other channels. The appropriate response is:

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

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

Eliminate the artifact by double-referencing the input signal derivation

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

Sample Question 2
The preferred method of correcting undesirable artifacts during the recording process is to:

Manipulation of low and high filters

Applying 60Hz notch filters to the artifact channels

Changing the input signal derivations

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

Sample Question 3
If 60Hz artifact is observed in one of the channels during the bio-cals process, the appropriate action should be:

Re-evaluate the problem after the patient goes to sleep

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

Use a 60Hz notch filter to eliminate the artifact

Find the problem source and correct it before beginning the study

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HLAB 1401 Exam 3 Healthcare Setting, Lab Services, And Math

Practice quiz/review for HCCS HLAB 1402 Exam 3. Please take time to read carefully.

Questions: 14 | Attempts: 56 | Last updated: Jun 14, 2025

Sample Question
In the healthcare setting, there are many services. What term does NOT pertain to Ambulatory services?

Primary services

Outpatient services

Secondary services

Local Health Department services

Tertiary services

12th Grade Healthcare Quizzes, Questions & Answers

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