non-rem - Search - Sleep Data - National Sleep Research Resource

Percentage of sleep time oxygen saturation (SaO2) is <= 90% change between baseline and follow-up

chg_pctsa90 under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables

Percentage of sleep time oxygen saturation (SaO2) is <= 95% change between baseline and follow-up

chg_pctsa95 under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables

Urgent referral - oxygen saturation (SaO2) <90% >2% sleep time = 1 urgent ineligible

sa02lt90 under Sleep Monitoring/Polysomnography/Signal Quality in CHAT variables

*Note studies that have oximetry problems here

Urgent referral - oxygen saturation (SaO2) <92% >2% sleep time = 1 Surgeon alert

sa02lt92 under Sleep Monitoring/Polysomnography/Signal Quality in CHAT variables

*Note studies that have oximetry problems here

Percentage Total Sleep Time (TST) where end-tidal carbon dioxide (ETCO2) > 45 millimeters (mm) mercury (Hg) (normalized for capnograph type)

nova_est_pctco2g45 under Sleep Monitoring/Polysomnography/Capnography in CHAT variables

Percentage Total Sleep Time (TST) where end-tidal carbon dioxide (ETCO2) > 50 millimeters (mm) mercury (Hg) (normalized for capnograph type)

nova_est_pctco2g50 under Sleep Monitoring/Polysomnography/Capnography in CHAT variables

Polysomnography (PSG) Quality Assessment (Sleep Heart Health Study Visit Two (SHHS2)): Wake/Sleep Scoring unreliable

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

Scorer noted that there was a problem differentiating stage wake from stage sleep.

Average end-tidal carbon dioxide (ETCO2) in rapid eye movement sleep (REM)

co2avgr under Sleep Monitoring/Polysomnography/Capnography in CHAT variables

Average end-tidal carbon dioxide (ETCO2) in non-rapid eye movement sleep (NREM)

rco2avgnr under Sleep Monitoring/Polysomnography/Capnography in CHAT variables

Average end-tidal carbon dioxide (ETCO2) in non-rapid eye movement sleep (NREM)

co2avgnr under Sleep Monitoring/Polysomnography/Capnography in CHAT variables

Average thoraco-abdominal asynchrony during scored-event-free non-rapid eye movement sleep (NREM) Stage 2

taa_n2 under Sleep Monitoring/Polysomnography/Thoraco-abdominal Asynchrony in CHAT variables

Average thoraco-abdominal asynchrony during scored-event-free non-rapid eye movement sleep (NREM) Stage 3

taa_n3 under Sleep Monitoring/Polysomnography/Thoraco-abdominal Asynchrony in CHAT variables

Average end-tidal carbon dioxide (ETCO2) in non-rapid eye movement sleep (NREM) (normalized for capnograph type)

nova_est_co2avgnr under Sleep Monitoring/Polysomnography/Capnography in CHAT variables

Percentage of non-rapid eye movement sleep (NREM) Stage 2 included in the total thoraco-abdominal asynchrony analysis

taa_n2_pctst under Sleep Monitoring/Polysomnography/Thoraco-abdominal Asynchrony in CHAT variables

Percentage of non-rapid eye movement sleep (NREM) Stage 3 included in the total thoraco-abdominal asynchrony analysis

taa_n3_pctst under Sleep Monitoring/Polysomnography/Thoraco-abdominal Asynchrony in CHAT variables

Number of desaturations per hour (Non-rapid eye movement sleep (NREM), >= 3%) change between baseline and follow-up

chg_dsnr3 under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables

Amount of non-rapid eye movement sleep (NREM) Stage 2 included in the total thoraco-abdominal asynchrony analysis

taa_n2_st under Sleep Monitoring/Polysomnography/Thoraco-abdominal Asynchrony in CHAT variables

Amount of non-rapid eye movement sleep (NREM) Stage 3 included in the total thoraco-abdominal asynchrony analysis

taa_n3_st under Sleep Monitoring/Polysomnography/Thoraco-abdominal Asynchrony in CHAT variables

Baseline end-tidal carbon dioxide (ETCO2) asleep (normalized for capnograph type)

nova_est_co2blslp under Sleep Monitoring/Polysomnography/Capnography in CHAT variables

Peak end-tidal carbon dioxide (ETCO2) asleep (normalized for capnograph type)

nova_est_co2peak under Sleep Monitoring/Polysomnography/Capnography in CHAT variables

Study scored sleep wake = 1, all sleep scored stage 2

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

1=Study scored sleep wake

Polysomnography (PSG) Quality Assessment (Sleep Heart Health Study Visit Two (SHHS2)): Stage1/Stage2 Scoring unreliable

stg1stg2pr under Sleep Monitoring/Polysomnography/Signal Quality/SHHS2 in SHHS variables

Scorer noted that there was a problem differentiating stage 1 and stage 2 sleep.

Polysomnography (PSG) Quality Assessment (Sleep Heart Health Study Visit Two (SHHS2)): Stage2/Stage3-4 Scoring unreliable

stg2stg3pr under Sleep Monitoring/Polysomnography/Signal Quality/SHHS2 in SHHS variables

Scorer noted that there was a problem differentiating stage 2 and stage 3/4 sleep.

Polysomnography (PSG) Quality Assessment : Abnormal Eye movements

abnoreye under Sleep Monitoring/Polysomnography/Signal Quality in SHHS variables

Scorer observed abnormal eye movements during study. Presence of the rhythmical lateral eye movements in Non-REM sleep, or asymmetrical or disconjugate movements.

Average ORP During non-REM

avg_orp_nonrem under Sleep Monitoring/Polysomnography/Electroencephalogram in SHHS variables

Average Odds Ratio Product (ORP) in all 30-s epochs during manually scored sleep stages. ORP is a continuous index of sleep depth and wake propensity. A value of 0 indicates very deep sleep, a value of 2.5 indicates full wakefulness. Search for all EEG variables within this dataset