rapid eye movement - Search - Sleep Data - National Sleep Research Resource

Scoring rapid eye movement sleep (REM)/non-rapid eye movement sleep (NREM) unreliable

remnrempr under Sleep Monitoring/Polysomnography/Signal Quality in CHAT variables

1=Sleep staging problem - scoring rapid eye movement sleep (REM)/non-rapid eye movement sleep (NREM) unreliable (when identification of Stage rapid eye movement sleep (REM) is unreliable (usually due to poor or missing EMG or when both EOGs are absent))

Polysomnography (PSG) Quality Assessment: Rapid eye movement sleep (REM)/Non-rapid eye movement sleep (NREM) scoring unreliable

remnrempr under Sleep Monitoring/Polysomnography/Signal Quality in SOF variables

Scorer noted that there was a problem differentiating rapid eye movement sleep (REM) and non-rapid eye movement sleep (NREM).

Polysomnography (PSG) Quality Assessment (Sleep Heart Health Study Visit Two (SHHS2)): rapid eye movement sleep (REM)/non-rapid eye movement sleep (NREM) Scoring unreliable

remnrempr under Sleep Monitoring/Polysomnography/Signal Quality/SHHS2 in SHHS variables

Scorer noted that there was a problem differentiating rapid eye movement sleep (REM) and non-rapid eye movement sleep (NREM).

Percentage of snore time in rapid eye movement sleep (REM) (decibel (dB) level 5)

prdb5slp under Sleep Monitoring/Polysomnography/Sound Events in CHAT variables

[(Total time snore at decibel (dB) level 5 in rapid eye movement sleep (REM)) / (total time rapid eye movement sleep (REM))] * 100

Polysomnography (PSG) Scoring Notes (Sleep Heart Health Study Visit One (SHHS1)): Scored Wake, non-rapid eye movement sleep (NREM), rapid eye movement sleep (REM) only

staging3 under Sleep Monitoring/Polysomnography/Signal Quality/SHHS1 in SHHS variables

Polysomnography (PSG) Quality Assessment (Sleep Heart Health Study Visit Two (SHHS2)): Arousals unreliable (Rapid eye movement sleep (REM))

remarunrel under Sleep Monitoring/Polysomnography/Signal Quality/SHHS2 in SHHS variables

Due to signal problems, scorer was unable to reliably assess arousals in stage rapid eye movement sleep (REM). The scoring of arousals in stage rapid eye movement sleep (REM) was determined to be unreliable.

Polysomnography (PSG) Quality Assessment: Arousals unreliable (Rapid eye movement sleep (REM))

remarunrel under Sleep Monitoring/Polysomnography/Signal Quality in SOF variables

Scoring arousals in rapid eye movement sleep (REM) (only) unreliable

remarunrel under Sleep Monitoring/Polysomnography/Signal Quality in CHAT variables

1=arousals in rapid eye movement sleep (REM) unreliable (when EMG is artifactual or absent during all or rapid eye movement sleep (REM) portion of the study)

Apnea-Hypopnea Index (NREM): (Apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and with no oxygen desaturation used and with or without arousal) / hours of NREM sleep from type I polysomnography

rdimnr0p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CHAT variables

Non-rapid eye movement sleep (NREM) Respiratory Disturbance Index (RDI) at all desaturations [(total number of apneas and hypopneas in non-rapid eye movement sleep (NREM)) / (hours of non-rapid eye movement sleep (NREM))]

Polysomnography (PSG) Quality Assessment (Sleep Heart Health Study Visit Two (SHHS2)): Unusual Staging

unustgou under Sleep Monitoring/Polysomnography/Signal Quality/SHHS2 in SHHS variables

Scorer observed unusual sleep staging. This is noted when there is no sleep in any particular stage (eg. no rapid eye movement sleep (REM)).

Arousal Index (REM): Number of arousals per hour of REM sleep from type II polysomnography

ai_rem under Sleep Monitoring/Polysomnography/Arousals in SOF variables

Total arousals in rapid eye movement sleep (REM) per hours of rapid eye movement sleep (REM)

Apnea-Hypopnea Index (REM): (Apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and with no oxygen desaturation used and with or without arousal) / hours of REM sleep from type I polysomnography

rdimrem0p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CHAT variables

[(total number of apneas and hypopneas in rapid eye movement sleep (REM)) / (hours of rapid eye movement sleep (REM))]

Minimum oxygen saturation in REM sleep from type I polysomnography

losao2r under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables

Lowest oxygen saturation (SaO2) in rapid eye movement sleep (REM) [minimum (all oxygen saturation (SaO2) values in rapid eye movement sleep (REM))]

Polysomnography (PSG) Scoring Notes (Sleep Heart Health Study Visit One (SHHS1)): rapid eye movement sleep (REM)/non-rapid eye movement sleep (NREM) unreliable

staging2 under Sleep Monitoring/Polysomnography/Signal Quality/SHHS1 in SHHS variables

Amount of sleep included in the total thoraco-abdominal asynchrony analysis

taa_total_st under Sleep Monitoring/Polysomnography/Thoraco-abdominal Asynchrony in CHAT variables

Arousal Index (NREM): Number of arousals per hour of NREM sleep from type II polysomnography

ai_nrem under Sleep Monitoring/Polysomnography/Arousals in SOF variables

Total arousals in non-rapid eye movement sleep (NREM) per hours of non-rapid eye movement sleep (NREM)

Is the sleep latency reliability?

sleep_latency under Sleep Monitoring/Polysomnography/Signal Quality/SHHS1 in SHHS variables

0: Unreliable 1:Reliable

Minimum oxygen saturation in NREM sleep from type I polysomnography

losao2nr under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables

Lowest oxygen saturation (SaO2) in non-rapid eye movement sleep (NREM) [minimum (all oxygen saturation (SaO2) values in non-rapid eye movement sleep (NREM))]

Percentage of REM sleep among total sleep duration from type I polysomnography

timeremp under Sleep Monitoring/Polysomnography/Sleep Architecture in CHAT variables

Conventionally, total sleep duration would be called total sleep time (TST).Percent of sleep time in rapid eye movement sleep (REM) [100*(number of minutes scored as rapid eye movement sleep (REM)) / (Total Sleep Time (TST))] * 100

Scored sleep/wake only?

slewaou under Sleep Monitoring/Polysomnography/Signal Quality in SOF variables

Baseline end-tidal carbon dioxide (ETCO2) asleep

co2blslp under Sleep Monitoring/Polysomnography/Capnography in CHAT variables

Baseline end-tidal carbon dioxide (ETCO2) asleep

rco2blslp under Sleep Monitoring/Polysomnography/Capnography in CHAT variables

Percentage of sleep included in the total thoraco-abdominal asynchrony analysis

taa_total_pctst under Sleep Monitoring/Polysomnography/Thoraco-abdominal Asynchrony in CHAT variables

Apnea-Hypopnea Index (REM): (Apneas with >= 2% oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and with >= 2% oxygen desaturation used and with or without arousal) / hours of REM sleep from type I polysomnography

rdimrem2p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CHAT variables

[(total number of apneas and hypopneas in rapid eye movement sleep (REM) associated with >= 2% desaturation) / (hours of rapid eye movement sleep (REM))]

Apnea-Hypopnea Index (REM): (Apneas with >= 3% oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and with >= 3% oxygen desaturation used and with or without arousal) / hours of REM sleep from type I polysomnography

rdimrem3p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CHAT variables

[(total number of apneas and hypopneas in rapid eye movement sleep (REM) associated with >= 3% desaturation) / (hours of rapid eye movement sleep (REM))]