We use cookies and other tools to enhance your experience on our website and to analyze our web traffic.
For more information about these cookies and the data collected, please refer to our Privacy Policy.

Search

Apnea-Hypopnea Index (REM): (Apneas with >= 4% oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and with >= 4% oxygen desaturation used and with or without arousal) / hours of REM sleep from type I polysomnography
rdimrem4p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CHAT variables
[(total number of apneas and hypopneas in rapid eye movement sleep (REM) associated with >= 4% desaturation) / (hours of rapid eye movement sleep (REM))]
Apnea-Hypopnea Index (REM): (Apneas with >= 5% oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and with >= 5% oxygen desaturation used and with or without arousal) / hours of REM sleep from type I polysomnography
rdimrem5p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CHAT variables
[(total number of apneas and hypopneas in rapid eye movement sleep (REM) associated with >= 5% desaturation) / (hours of rapid eye movement sleep (REM))]
Peak end-tidal carbon dioxide (ETCO2) asleep
co2peak under Sleep Monitoring/Polysomnography/Capnography in CHAT variables
LOG % Total Sleep Time (TST) with carbon dioxide (CO2) > 50 millimeters (mm) mercury (Hg)
lgpctco2g50 under Sleep Monitoring/Polysomnography/Capnography in CHAT variables
Original source: MS 003
LOG % Total Sleep Time (TST) with carbon dioxide (CO2) > 50 millimeters (mm) mercury (Hg) (0 replaced with 0.0001)
lgpctco2g50_0 under Sleep Monitoring/Polysomnography/Capnography in CHAT variables
Original source: MS 003
Peak end-tidal carbon dioxide (ETCO2) asleep
rco2peak under Sleep Monitoring/Polysomnography/Capnography in CHAT variables
Scoring stage wake/sleep unreliable
wakslepr under Sleep Monitoring/Polysomnography/Signal Quality in CHAT variables
1=Sleep staging problem - scoring wake/sleep unreliable (when the clarity of the EEG makes distinguishing the transition unreliable)
Percentage of Total Sleep Time (TST) where end-tidal carbon dioxide (ETCO2) > 45 millimeters (mm) mercury (Hg)
rpctco2g45 under Sleep Monitoring/Polysomnography/Capnography in CHAT variables
Percentage of Total Sleep Time (TST) where end-tidal carbon dioxide (ETCO2) > 50 millimeters (mm) mercury (Hg)
rpctco2g50 under Sleep Monitoring/Polysomnography/Capnography in CHAT variables
Apnea-Hypopnea Index (NREM): (Apneas with >= 4% oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and with >= 4% oxygen desaturation used and with or without arousal) / hours of NREM sleep from type I polysomnography
rdimnr4p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CHAT variables
[(total number of apneas and hypopneas in non-rapid eye movement sleep associated with >= 4% desaturation) / (hours of non-rapid eye movement sleep (NREM))]
Apnea-Hypopnea Index (NREM): (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 NREM sleep from type I polysomnography
rdimnr2p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CHAT variables
[(total number of apneas and hypopneas in non-rapid eye movement sleep (NREM) associated with >= 2% desaturation) / (hours of non-rapid eye movement sleep (NREM))]
Apnea-Hypopnea Index (NREM): (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 NREM sleep from type I polysomnography
rdimnr3p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CHAT variables
[(total number of apneas and hypopneas in non-rapid eye movement sleep (NREM) associated with >= 3% desaturation) / (hours of non-rapid eye movement sleep (NREM))]
Apnea-Hypopnea Index (NREM): (Apneas with >= 5% oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and with >= 5% oxygen desaturation used and with or without arousal) / hours of NREM sleep from type I polysomnography
rdimnr5p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CHAT variables
[(total number of apneas and hypopneas in non-rapid eye movement sleep (NREM) associated with >= 5% desaturation) / (hours of non-rapid eye movement sleep (NREM))]
Percentage of Total Sleep Time (TST) where end-tidal carbon dioxide (ETCO2) > 45 millimeters (mm) mercury (Hg)
pctco2g45 under Sleep Monitoring/Polysomnography/Capnography in CHAT variables
Percentage of Total Sleep Time (TST) end-tidal carbon dioxide (ETCO2) > 50 millimeters (mm) mercury (Hg)
pctco2g50 under Sleep Monitoring/Polysomnography/Capnography 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
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.
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
Polysomnography (PSG) Quality Assessment: Unusual staging
unustgou under Sleep Monitoring/Polysomnography/Signal Quality in SOF 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)).
Baseline end-tidal carbon dioxide (ETCO2) asleep (normalized for capnograph type)
nova_est_co2blslp under Sleep Monitoring/Polysomnography/Capnography in CHAT variables
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
Average end-tidal carbon dioxide (ETCO2) in rapid eye movement sleep (REM)
rco2avgr under Sleep Monitoring/Polysomnography/Capnography in CHAT variables
© 2024
NSRR
National Sleep Research Resource
Privacy
Contact Us | Funded By NHLBI