Related Variables
| ahiov50 |
PSG Quality Assessment: Medical Alert - AHI > 50
Medical Alert for AHI over 50. |
Polysomnography/Medical Alert | |
| ahi_a0h3 | Apnea-Hypopnea Index (AHI) >= 3% - number of [all apneas] and [hypopneas with >= 3% oxygen desaturation] per hour of sleep | Polysomnography/Respiratory Events/Indexes | |
| ahi_a0h3a | Apnea-Hypopnea Index (AHI) >= 3% - number of [all apneas] and [hypopneas with >= 3% oxygen desaturation or arousal] per hour of sleep | Polysomnography/Respiratory Events/Indexes | |
| ahi_a0h4 | Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep | Polysomnography/Respiratory Events/Indexes | |
| ahi_a0h4a | Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep | Polysomnography/Respiratory Events/Indexes | |
| ahi_c0h3 | Central Apnea-Hypopnea Index (AHI) >= 3% - number of [central apneas] and [hypopneas with >= 3% oxygen desaturation] per hour of sleep | Polysomnography/Respiratory Events/Indexes | |
| ahi_c0h3a | Central Apnea-Hypopnea Index (AHI) >= 3% - number of [central apneas] and [hypopneas with >= 3% oxygen desaturation or arousal] per hour of sleep | Polysomnography/Respiratory Events/Indexes | |
| ahi_c0h4 | Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep | Polysomnography/Respiratory Events/Indexes | |
| ahi_c0h4a | Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep | Polysomnography/Respiratory Events/Indexes | |
| ahi_o0h3 | Obstructive Apnea-Hypopnea Index (AHI) >= 3% - number of [obstructive apneas] and [hypopneas with >= 3% oxygen desaturation] per hour of sleep | Polysomnography/Respiratory Events/Indexes | |
| ahi_o0h3a | Obstructive Apnea-Hypopnea Index (AHI) >= 3% - number of [obstructive apneas] and [hypopneas with >= 3% oxygen desaturation or arousal] per hour of sleep | Polysomnography/Respiratory Events/Indexes | |
| ahi_o0h4 | Obstructive Apnea-Hypopnea Index (AHI) >= 4% - number of [obstructive apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep | Polysomnography/Respiratory Events/Indexes | |
| ahi_o0h4a | Obstructive Apnea-Hypopnea Index (AHI) >= 4% - number of [obstructive apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep | Polysomnography/Respiratory Events/Indexes | |
| oahi | Obstructive Apnea Hypopnea Index (OAHI) at 4% oxygen desaturation | Polysomnography/Respiratory Events/Indexes | |
| rdi0p | Overall RDI all oxygen desaturations | Polysomnography/Respiratory Events/Indexes | |
| rdi0pa | Overall RDI all oxygen desaturations or arousal | Polysomnography/Respiratory Events/Indexes | |
| rdi0pns | Overall RDI (non-Supine) all oxygen desaturations | Polysomnography/Respiratory Events/Indexes | |
| rdi0ps | Overall RDI (Supine) all oxygen desaturations | Polysomnography/Respiratory Events/Indexes | |
| rdi2p | Overall RDI at 2% oxygen desaturation | Polysomnography/Respiratory Events/Indexes | |
| rdi2pa | Overall RDI at 2% oxygen desaturation or arousal | Polysomnography/Respiratory Events/Indexes | |
| rdi2pns | Overall RDI (non-Supine) at 2% oxygen desaturation | Polysomnography/Respiratory Events/Indexes | |
| rdi2ps | Overall RDI (Supine) at 2% oxygen desaturation | Polysomnography/Respiratory Events/Indexes | |
| rdi3p | Overall RDI at 3% oxygen desaturation | Polysomnography/Respiratory Events/Indexes | |
| rdi3pa | Overall RDI at 3% oxygen desaturation or arousal | Polysomnography/Respiratory Events/Indexes | |
| rdi3pns | Overall RDI (non-Supine) at 3% oxygen desaturation | Polysomnography/Respiratory Events/Indexes | |
| rdi3ps | Overall RDI (Supine) at 3% oxygen desaturation | Polysomnography/Respiratory Events/Indexes | |
| rdi4p |
Overall RDI at 4% oxygen desaturation
Ratio of the count of all apneas (central and obstructive) and hypopneas associated with at least a 4% oxygen desaturation to the total sleep time expressed in hours |
Polysomnography/Respiratory Events/Indexes | |
| rdi4pa | Overall RDI at 4% oxygen desaturation or arousal | Polysomnography/Respiratory Events/Indexes | |
| rdi4pns | Overall RDI (non-Supine) at 4% oxygen desaturation | Polysomnography/Respiratory Events/Indexes | |
| rdi4ps | Overall RDI (Supine) at 4% oxygen desaturation | Polysomnography/Respiratory Events/Indexes | |
| rdi5p | Overall RDI at 5% oxygen desaturation | Polysomnography/Respiratory Events/Indexes | |
| rdi5pa | Overall RDI at 5% oxygen desaturation or arousal | Polysomnography/Respiratory Events/Indexes | |
| rdi5pns | Overall RDI (non-Supine) at 5% oxygen desaturation | Polysomnography/Respiratory Events/Indexes | |
| rdi5ps | Overall RDI (Supine) at 5% oxygen desaturation | Polysomnography/Respiratory Events/Indexes | |
| rdinr0p | Overall RDI (NREM) all oxygen desaturations | Polysomnography/Respiratory Events/Indexes | |
| rdinr2p | Overall RDI (NREM) at 2% oxygen desaturation | Polysomnography/Respiratory Events/Indexes | |
| rdinr3p | Overall RDI (NREM) at 3% oxygen desaturation | Polysomnography/Respiratory Events/Indexes | |
| rdinr4p | Overall RDI (NREM) at 4% oxygen desaturation | Polysomnography/Respiratory Events/Indexes | |
| rdinr5p | Overall RDI (NREM) at 5% oxygen desaturation | Polysomnography/Respiratory Events/Indexes | |
| rdirem0p | Overall RDI (REM) all oxygen desaturations | Polysomnography/Respiratory Events/Indexes | |
| rdirem2p | Overall RDI (REM) at 2% oxygen desaturation | Polysomnography/Respiratory Events/Indexes | |
| rdirem3p | Overall RDI (REM) at 3% oxygen desaturation | Polysomnography/Respiratory Events/Indexes | |
| rdirem4p | Overall RDI (REM) at 4% oxygen desaturation | Polysomnography/Respiratory Events/Indexes | |
| rdirem5p | Overall RDI (REM) at 5% oxygen desaturation | Polysomnography/Respiratory Events/Indexes |