Related Variables
oahi |
Obstructive Apnea Hypopnea Index (OAHI) at 4% oxygen desaturation
Obstructive Apnea Hypopnea Index at 4% oxygen desaturation. Ratio of the count of all obstructive apneas plus the count of hypopneas associated with at least a 4% oxygen desaturation to the total sleep time expressed in hours. {[(Total number of obstructive apneas) + (Total number of hypopneas associated with >= 4% oxygen desaturation)] / (hours of sleep)} |
Measurements/PSG/Respiratory Events/Indexes | |
rdi4p |
Overall RDI at 4% oxygen desaturation
Respiratory Disturbance Index 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. [(Total number of apneas and hypopneas associated with >= 4% oxygen desaturation) / (hours of sleep)] |
Measurements/PSG/Respiratory Events/Indexes | |
rdi4pns |
Overall RDI (non-Supine) at 4% oxygen desaturation
Non-Supine RDI at 4% oxygen desaturation [(Total number of apneas and hypopneas in non-supine body position associated with >= 4% oxygen desaturation) / (hours of sleep)] |
Measurements/PSG/Respiratory Events/Indexes | |
rdinr4p |
Overall RDI (NREM) at 4% oxygen desaturation
Non-REM RDI at 4% oxygen desaturation [(Total number of apneas and hypopneas in non-REM sleep associated with >= 4% oxygen desaturation) / (hours of NREM sleep)] |
Measurements/PSG/Respiratory Events/Indexes |