RPSGT Documentation & Record Keeping 5

Question 1

The term 'total recording time' (TRT) in PSG documentation is defined as:

Accepted Answer

The interval from lights off to lights on

Answer

TRT is the entire lights-off to lights-on period and serves as the denominator for calculating sleep efficiency.

Question 2

A scored epoch is classified as Wake (W) when alpha or other waking EEG activity occupies more than what fraction of the epoch per AASM rules?

Accepted Answer

50%

Answer

Per AASM scoring rules, an epoch is scored Wake when more than 50% contains alpha or low-amplitude mixed-frequency activity characteristic of wakefulness.

Question 3

During a home sleep apnea test (HSAT), the patient log completed by the patient serves primarily to:

Accepted Answer

Document lights off/on times and any interruptions not captured by the device

Answer

Because no technician is present, the patient log captures key timestamps and events (getting up, equipment problems) needed to interpret device data accurately.

Question 4

When an AASM-required 10-minute inter-scorer reliability check is performed, the acceptable minimum agreement for sleep staging is:

Accepted Answer

80% epoch-by-epoch agreement

Answer

AASM accreditation standards require a minimum of 80% epoch-by-epoch agreement between scorers on sleep staging during inter-scorer reliability assessments.

Question 5

A CAP (cyclic alternating pattern) notation in technician comments indicates documentation of:

Accepted Answer

A periodic EEG pattern of NREM instability with alternating A (activation) and B (background) phases

Answer

CAP is an NREM sleep EEG marker of sleep instability, with phase A (phasic activation bursts) alternating with phase B (background), relevant to sleep fragmentation analysis.

RPSGT Exam Practice Test

RPSGT Exam Practice Test

RPSGT Documentation & Record Keeping 5