Certified Polysomnographic Technician Certification Certified Polysomnographic Technician Certification Sleep Scoring & Staging

Question 1

According to AASM scoring rules, what EEG frequency range defines Stage N2 sleep spindles?

Accepted Answer

12–16 Hz

Answer

8–12 Hz

Answer

4–8 Hz

Answer

16–20 Hz

Question 2

Which feature is REQUIRED to score a 30-second epoch as Stage N3?

Accepted Answer

Slow wave activity (0.5–2 Hz, ≥75 µV) occupying ≥20% of the epoch

Answer

Sleep spindles occupying >20% of the epoch

Answer

K-complexes in the first half of the epoch

Answer

Theta activity occupying ≥50% of the epoch

Question 3

During REM sleep scoring, which eye channel finding is most characteristic?

Accepted Answer

Rapid, conjugate, irregular eye movements

Answer

Slow rolling eye movements

Answer

No eye movements

Answer

Vertical nystagmus

Question 4

What is the minimum duration of a respiratory event to score it as an obstructive apnea per AASM guidelines?

Accepted Answer

10 seconds

Answer

5 seconds

Answer

15 seconds

Answer

20 seconds

Question 5

When scoring a hypopnea using the AASM recommended criteria, what percent reduction in nasal pressure signal amplitude is required?

Accepted Answer

30%

Answer

10%

Answer

20%

Answer

50%

Question 6

Which arousal scoring rule requires EEG frequency shift lasting at least 3 seconds after ≥10 seconds of sleep?

Accepted Answer

AASM arousal rule

Answer

ICSD arousal rule

Answer

Rechtschaffen & Kales arousal rule

Answer

Berry arousal rule