RPSGT
Domain 3: Scoring, Reporting, & Data
Verification
Final Assessment Review
(With Solutions)
2026
1
,Multiple Choice
In adult PSG scoring, which stage of sleep is characterized by the
presence of K-complexes and sleep spindles?
a) N1
b) N2
c) N3
d) REM
Answer: b) N2
Rationale: N2 sleep is defined by K-complexes and sleep spindles on
EEG.
Which scoring rule applies to hypopneas during CPAP titration
studies?
a) Only events causing 4% desaturation are scored
b) Events with at least 30% airflow reduction and either 3%
desaturation or arousal
c) Any reduction in airflow lasting 10 seconds
d) Hypopneas are not scored during titration
Answer: b) Events with ≥30% airflow reduction and either 3%
desaturation or arousal
Rationale: AASM recommends scoring hypopneas with ≥30%
reduction and ≥3% desaturation or arousal.
In pediatric scoring, the recommended minimum duration for scoring
an apnea event is:
a) 10 seconds
b) ≥2 breaths
c) 5 seconds
d) 15 seconds
Answer: b) ≥2 breaths
Rationale: Pediatric apneas are scored based on duration of two
breaths due to faster respiratory rates in children.
Which of the following artifacts can mimic arousals in EEG during
scoring?
2
, a) Eye movement artifacts
b) ECG artifact
c) Electrode pop artifact
d) Limb movement artifact
Answer: c) Electrode pop artifact
Rationale: Electrode pops can create sharp waveforms that may be
mistaken for arousals if not carefully reviewed.
The respiratory event index formula in scoring includes which of the
following variables?
a) Total sleep time only
b) Total recording time only
c) Number of respiratory events divided by total sleep time in hours
d) Number of hypopneas divided by total recording time
Answer: c) Number of respiratory events divided by total sleep time in
hours
Rationale: RDI is events per hour of sleep, so numerator is events and
denominator is total sleep time.
True / False
REM sleep scoring criteria differ between adults and infants due to
the developmental state of the EEG.
True
Rationale: Infant REM sleep lacks clear adult-like rapid eye
movements and EEG patterns.
Arousals must be at least 3 seconds in duration to be scored during
polysomnography.
False
Rationale: Arousals typically last 1 to 3 seconds and are scored if
lasting at least 3 seconds.
In scoring pediatric studies, scoring central apneas must include
evaluation of associated oxygen desaturation or bradycardia.
True
3
Domain 3: Scoring, Reporting, & Data
Verification
Final Assessment Review
(With Solutions)
2026
1
,Multiple Choice
In adult PSG scoring, which stage of sleep is characterized by the
presence of K-complexes and sleep spindles?
a) N1
b) N2
c) N3
d) REM
Answer: b) N2
Rationale: N2 sleep is defined by K-complexes and sleep spindles on
EEG.
Which scoring rule applies to hypopneas during CPAP titration
studies?
a) Only events causing 4% desaturation are scored
b) Events with at least 30% airflow reduction and either 3%
desaturation or arousal
c) Any reduction in airflow lasting 10 seconds
d) Hypopneas are not scored during titration
Answer: b) Events with ≥30% airflow reduction and either 3%
desaturation or arousal
Rationale: AASM recommends scoring hypopneas with ≥30%
reduction and ≥3% desaturation or arousal.
In pediatric scoring, the recommended minimum duration for scoring
an apnea event is:
a) 10 seconds
b) ≥2 breaths
c) 5 seconds
d) 15 seconds
Answer: b) ≥2 breaths
Rationale: Pediatric apneas are scored based on duration of two
breaths due to faster respiratory rates in children.
Which of the following artifacts can mimic arousals in EEG during
scoring?
2
, a) Eye movement artifacts
b) ECG artifact
c) Electrode pop artifact
d) Limb movement artifact
Answer: c) Electrode pop artifact
Rationale: Electrode pops can create sharp waveforms that may be
mistaken for arousals if not carefully reviewed.
The respiratory event index formula in scoring includes which of the
following variables?
a) Total sleep time only
b) Total recording time only
c) Number of respiratory events divided by total sleep time in hours
d) Number of hypopneas divided by total recording time
Answer: c) Number of respiratory events divided by total sleep time in
hours
Rationale: RDI is events per hour of sleep, so numerator is events and
denominator is total sleep time.
True / False
REM sleep scoring criteria differ between adults and infants due to
the developmental state of the EEG.
True
Rationale: Infant REM sleep lacks clear adult-like rapid eye
movements and EEG patterns.
Arousals must be at least 3 seconds in duration to be scored during
polysomnography.
False
Rationale: Arousals typically last 1 to 3 seconds and are scored if
lasting at least 3 seconds.
In scoring pediatric studies, scoring central apneas must include
evaluation of associated oxygen desaturation or bradycardia.
True
3
