What's the difference between a "Hypopnea w/Desat" and a "Hypopnea w/Arousal"? And why weren't the "Hypopneas w/Arousal" counted in the "Apneas+Hypopneas" and "AHI" computation from my sleep study, but were counted in the "RDI" computation?
The respiratory data section of the sleep study report is shown below.
Code: Select all
Type NREM count REM count Total Count Total Index
Central Apneas: 0 0 0 0.0
Obstructive Apneas: 14 0 14 3.5
Mixed Apneas: 0 0 0 0.0
Hypopneas: 71 7 78 19.6
Hypopneas w/ Desat: 0 0 0 0.0
Hypopneas w/ Arousal: 71 7 78 19.6
Apneas + Hypopneas: 14 0 14 3.5
Supine Events: - - 7 15.3
Nonsupine Events: - - 85 24.2
AHI = (OA + CA + MA + OH w/desat) per hour of sleep:
AHI NREM: 3.9
AHI REM: 0.0
AHI total: 3.5
RDI = (OA + CA + MA + OH w/arousal + OH w/desat) per hour of sleep:
RDI NREM: 23.8
RDI REM: 17.5
RDI total: 23.1