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Understanding EOG Polarity and Calculating AHI Quiz

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Understanding EOG Polarity and Calculating AHI Quiz

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Questions and Answers

What is the purpose of correcting artifacts in sleep data analysis?

To make the data more confusing to interpret

To slow down the analysis process

To introduce errors for more challenging interpretation

To enhance the signal clarity for accurate analysis (correct)

Why is it crucial to have the correct EOG polarity?

To induce more REM sleep

To eliminate REM sleep

To increase deep sleep stages

To distinguish REM sleep recognition from other sleep stages (correct)

In calculating a patient's AHI, what does the Apnea Hypopnea Index represent?

# of sleep events divided by total sleep time (correct)

# of arousals divided by total REM time

# of deep sleep stages divided by total sleep time

# of REM sleep episodes divided by total recording time

Where are the ECG leads placed in a modified lead II ECG?

Right clavicle and left lower thorax on third rib Signup and view all the answers

What is the main consequence of mixing electrode materials within a derivation?

Distortion of recorded data Signup and view all the answers

Why should the impedance in sleep studies typically be kept below 5,000 ohms?

To reduce noise and interference in the signals Signup and view all the answers

What is the purpose of the 60 Hz notch filter in PSG?

To eliminate ECG artifact Signup and view all the answers

Which sleep disorder is characterized by involuntary movements during sleep?

Parasomnias Signup and view all the answers

What type of AV block is characterized by a progressive heart block?

Second-degree AV block, Type I Signup and view all the answers

In PSG, what can cause cardioballistic artifact?

Cardiogenic oscillations Signup and view all the answers

What clinical condition is associated with Ventricular Fibrillation?

Ventricular tachycardia Signup and view all the answers

Which manual replaced the R&K Manual for scoring sleep studies?

AASM scoring manual Signup and view all the answers