FREE RST Scoring, Documentation & Reporting Questions and Answers

Question 1

According to AASM scoring rules, what is the minimum duration required to score an apnea event?

Accepted Answer

10 seconds

Answer

5 seconds

Answer

15 seconds

Answer

30 seconds

Question 2

Which of the following is required to score a hypopnea in an adult patient?

Accepted Answer

≥30% airflow reduction with ≥3% desaturation or arousal

Answer

≥50% airflow reduction with EEG arousal

Answer

Any airflow reduction with snoring

Answer

≥10% airflow reduction with respiratory effort

Question 3

How is the Apnea-Hypopnea Index (AHI) calculated?

Accepted Answer

Number of events per hour of sleep

Answer

Number of events per hour of recording time

Answer

Number of events during REM sleep only

Answer

Number of oxygen desaturations per hour

Question 4

Which EEG finding is required to score a sleep spindle?

Accepted Answer

11-16 Hz activity lasting ≥0.5 seconds

Answer

Delta waves (0.5-2 Hz)

Answer

Sharply contoured theta waves

Answer

K-complexes with alpha intrusion

Question 5

What is the minimum duration of elevated chin EMG activity required to score an arousal during REM sleep?

Accepted Answer

≥0.5 seconds

Answer

≥1 second

Answer

≥2 seconds

Answer

Any visible increase

Question 6

Which of the following must be included in a standard PSG report?

Accepted Answer

Sleep stage percentages and AHI

Answer

Patient's home address

Answer

Technologist's work schedule

Answer

Raw EEG calibration data

Question 7

How are periodic limb movements (PLMs) scored?

Accepted Answer

≥4 movements lasting 0.5-5 seconds, 5-90 seconds apart

Answer

Any leg movement during sleep

Answer

Only movements associated with arousals

Answer

Movements occurring exclusively in N3 sleep

Question 8

What defines a 'major body movement' in sleep staging?

Accepted Answer

Movement artifact obscuring EEG for ≥50% of epoch

Answer

Any epoch with EMG artifact

Answer

Limb movements lasting >10 seconds

Answer

Sleep stage transitions

Question 9

Which parameter is critical for scoring Cheyne-Stokes respiration?

Accepted Answer

Cyclic crescendo-decrescendo breathing ≥3 cycles

Answer

Oxygen desaturation <70%

Answer

Exclusive occurrence during REM sleep

Answer

Associated snoring