central - Search - Sleep Data - National Sleep Research Resource

Central Apnea Index : (Central apneas with no oxygen desaturation threshold used and with or without arousal) / hour of sleep from type I polysomnography

cai0p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CHAT variables

[(Total number of central apneas associated with all desaturations) / (hours of sleep)]. Will be missing if Total Sleep Time (TST) is 0.

Central Apnea Index : (Central apneas with >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography

cai4p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CHAT variables

[(Total number of central apneas associated with >= 4% desaturations) / (hours of sleep)]

Central Apnea Index : (Central apneas with >= 4% oxygen desaturation or with arousal) / hour of sleep from type I polysomnography

cai4pa under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CHAT variables

[(Total number of central apneas with >= 4% desaturation or arousal) / (hours of sleep)]

Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 3% desaturation or with arousal) / hour of sleep from type I polysomnography

cahi_ca0uhp3x3r_f1t1 under Sleep Monitoring/Polysomnography in ABC variables

Calculated - Summary metric of sleep disordered breathing events. The definition for hypopneas is consistent with the following clinical guidelines: (1) American Academy of Sleep Medicine (AASM) 2007 Manual (2012 update) (recommended). Berry RB et al. 2012 (PubMed ID:23066376), and (2) American Academy of Sleep Medicine (AASM) 2015 (recommended) [Berry RB et al. The AASM Manual for the Scoring of Sleep and Associated Events: Rules, Terminology and Technical Specifications, Version 2.2. American Academy of Sleep Medicine, Darien, IL, 2015.] Search for all AHI variables consistent with the same clinical guidelines within this dataset

Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 3% desaturation and with or without arousal) / hour of sleep from type I polysomnography from type I polysomnography

cahi_ca0uhp3x3u_f1t1 under Sleep Monitoring/Polysomnography in ABC variables

Calculated - Summary metric of sleep disordered breathing events.

Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 4% desaturation or with arousal) / hour of sleep from type I polysomnography

cahi_ca0uhp3x4r_f1t1 under Sleep Monitoring/Polysomnography in ABC variables

Calculated - Summary metric of sleep disordered breathing events.

Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 4% desaturation and with or without arousal) / hour of sleep from type I polysomnography

cahi_ca0uhp3x4u_f1t1 under Sleep Monitoring/Polysomnography in ABC variables

Calculated - Summary metric of sleep disordered breathing events. The definition of hypopnea events is consistent with the following clinical guidelines: (1) AASM 2012 update (alternative) Berry RB et al. 2012 (PubMed ID:23066376), and (2) AASM 2015 (acceptable) [Berry RB et al. The AASM Manual for the Scoring of Sleep and Associated Events: Rules, Terminology and Technical Specifications, Version 2.2. American Academy of Sleep Medicine, Darien, IL, 2015.]. Search for all AHI variables consistent with the same clinical guidelines within this dataset

Central Apnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal) / hour of sleep from type I polysomnography

cai_ca0u_f1t1 under Sleep Monitoring/Polysomnography in ABC variables

Calculated - Summary metric of sleep disordered breathing events.

Central Apnea-Hypopnea Index : (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 3% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography

ahi_c0h3 under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CFS variables

Calculated - Summary metric of sleep disordered breathing events.

Central Apnea-Hypopnea Index : (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 3% oxygen desaturation or with arousal) / hour of sleep from type I polysomnography

ahi_c0h3a under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CFS variables

Central Apnea-Hypopnea Index : (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography

ahi_c0h4 under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CFS variables

Calculated - Summary metric of sleep disordered breathing events. The definition of hypopnea events is consistent with the following clinical guidelines: (1) AASM 2012 update (recommended) Berry RB et al. 2012 (PubMed ID:23066376), and (2) AASM 2015 (acceptable) [Berry RB et al. The AASM Manual for the Scoring of Sleep and Associated Events: Rules, Terminology and Technical Specifications, Version 2.2. American Academy of Sleep Medicine, Darien, IL, 2015.]. Search for all AHI variables consistent with the same clinical guidelines within this dataset

Central Apnea-Hypopnea Index : (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 4% oxygen desaturation or with arousal) / hour of sleep from type I polysomnography

ahi_c0h4a under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CFS variables

Calculated - Summary metric of sleep disordered breathing events.

Central Apnea Index : (Central apneas with no oxygen desaturation threshold used and with or without arousal) / hour of sleep from type I polysomnography

cai0p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CFS variables

Calculated - Summary metric of sleep disordered breathing events.

Central Apnea Index : (Central apneas with >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography

cai4p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CFS variables

Calculated - Summary metric of sleep disordered breathing events.

Central Apnea Index : (Central apneas with >= 4% oxygen desaturation or with arousal) / hour of sleep from type I polysomnography

cai4pa under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CFS variables

Calculated - Summary metric of sleep disordered breathing events.

Central Apnea Index (NREM, Supine) : (Central apneas with no oxygen desaturation threshold used only with arousal) / hour of NREM sleep in supine position from type I polysomnography

cardnba under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CFS variables

Calculated - Summary metric of sleep disordered breathing events.

Central Apnea Index (NREM, Supine) : (Central apneas with >= 2% oxygen desaturation or with arousal) / hour of NREM sleep in supine position from type I polysomnography

cardnba2 under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CFS variables

Calculated - Summary metric of sleep disordered breathing events.

Central Apnea Index (NREM, Supine) : (Central apneas with >= 3% oxygen desaturation or with arousal) / hour of NREM sleep in supine position from type I polysomnography

cardnba3 under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CFS variables

Calculated - Summary metric of sleep disordered breathing events.

Central Apnea Index (NREM, Supine) : (Central apneas with >= 4% oxygen desaturation or with arousal) / hour of NREM sleep in supine position from type I polysomnography

cardnba4 under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CFS variables

Calculated - Summary metric of sleep disordered breathing events.

Central Apnea Index (NREM, Supine) : (Central apneas with >= 5% oxygen desaturation or with arousal) / hour of NREM sleep in supine position from type I polysomnography

cardnba5 under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CFS variables

Calculated - Summary metric of sleep disordered breathing events.

Central Apnea Index (NREM, Supine) : (Central apneas with no oxygen desaturation threshold used and with or without arousal) / hour of NREM sleep in supine position from type I polysomnography

cardnbp under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CFS variables

Calculated - Summary metric of sleep disordered breathing events.

Central Apnea Index (NREM, Supine) : (Central apneas with >= 2% oxygen desaturation and with or without arousal) / hour of NREM sleep in supine position from type I polysomnography

cardnbp2 under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CFS variables

Calculated - Summary metric of sleep disordered breathing events.

Central Apnea Index (NREM, Supine) : (Central apneas with >= 3% oxygen desaturation and with or without arousal) / hour of NREM sleep in supine position from type I polysomnography

cardnbp3 under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CFS variables

Calculated - Summary metric of sleep disordered breathing events.

Central Apnea Index (NREM, Supine) : (Central apneas with >= 4% oxygen desaturation and with or without arousal) / hour of NREM sleep in supine position from type I polysomnography

cardnbp4 under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CFS variables

Calculated - Summary metric of sleep disordered breathing events.

Central Apnea Index (NREM, Supine) : (Central apneas with >= 5% oxygen desaturation and with or without arousal) / hour of NREM sleep in supine position from type I polysomnography

cardnbp5 under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CFS variables

Calculated - Summary metric of sleep disordered breathing events.