06-12-2024, 06:45 AM
Does 10 EEG arousals/hour mean sleep apnea?
I was always pretty good at algebra but I can't make sense of this set of data.
Normal AHI is 0-5; above that and you have sleep apnea.
Normal RDI is 0-5; above that and you have sleep apnea.
RDI = AHI + RERAs/hour*
So, if you have an AHI of 5, even a single RERA all night means you have sleep apnea!
Yet normal people have at least 10 EEG arousals PER HOUR - which are essentially RERAs!!**
Where have I misunderstood?
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*A RERA is an abnormal breathing event which does not meet the criteria of an Apnea or an Hypopnea, but is an “arousal” event associated with a respiratory effort as noted by EEG.
**"EEG Arousal Norms by Age" https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2564772/
Normal AHI is 0-5; above that and you have sleep apnea.
Normal RDI is 0-5; above that and you have sleep apnea.
RDI = AHI + RERAs/hour*
So, if you have an AHI of 5, even a single RERA all night means you have sleep apnea!
Yet normal people have at least 10 EEG arousals PER HOUR - which are essentially RERAs!!**
Where have I misunderstood?
----------
*A RERA is an abnormal breathing event which does not meet the criteria of an Apnea or an Hypopnea, but is an “arousal” event associated with a respiratory effort as noted by EEG.
**"EEG Arousal Norms by Age" https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2564772/
