General Discussion on any topic relating to CPAP and/or Sleep Apnea.
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Danlo67
- Posts: 53
- Joined: Tue Dec 19, 2017 11:38 pm
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by Danlo67 » Sat Dec 30, 2017 6:33 pm
Hi all.
Just a bit concerned here. Last night SleepyHead recorded I had 39 RERA events.
Wikipeda has this as a definiton for RERA sleep but it's a bit confusing to me. Can anyone translate this to the average human being for me please and how does high RERA events relate to how I feel the next day? my AHI is getting under 5 but still not at the rate of what I've seen some on. Last night at 3.26. I am still waking up with milder headaches than before CPAP and still experiencing a lot of day time drowsiness. Especially early evening 3-6 pm but I seem to pick up from about 8 pm to bed time which is anything from 10.30 pm to 12.30 am for me
The respiratory disturbance index (RDI) — or respiratory distress Index — is a formula used in reporting polysomnography (sleep study) findings. Like the apnea-hypopnea index (AHI), it reports on respiratory events during sleep, but unlike the AHI, it also includes respiratory-effort related arousals (RERAs).[1] RERAs are arousals from sleep that do not technically meet the definitions of apneas or hypopneas, but do disrupt sleep. They are abrupt transitions from a deeper stage of sleep to a shallower. A RERA is characterized by increasing respiratory effort (and thus decreasing esophageal pressures) for 10 seconds or more leading to an arousal from sleep, but one that does not fulfill the criteria for a hypopnea or apnea.
Here's the screenshot from SleepyHead

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Using Dreamstation AutoCPAP
Setting at 13cm Fixed
Dreamweaver gel pillow mask
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Pugsy
- Posts: 65181
- Joined: Thu May 14, 2009 9:31 am
- Location: Missouri, USA
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by Pugsy » Sat Dec 30, 2017 6:42 pm
Think of RERAs has symptoms of a flow reduction that didn't quite earn a hyponea/OA flag but could still be a disturbing factor to your sleep quality.
There was a flow reduction that maybe caused an arousal and the RERA is the result of the arousal because the machine thinks your breathing looks like arousal breathing. RERAs aren't the flow reduction itself but instead the machine thinking that your breathing looks like breathing which happens after an arousal.
Your pressure is still not quite optimal despite the lower AHI than what you had been seeing.
The AHI could stand a little more reduction and the RERAs are numerous enough they could be seriously impacting the quality of your sleep...
so you need a little more minimum pressure still yet.
Not sure how much more but probably not much.....maybe just 1.0 cm.
I may have to RISE but I refuse to SHINE.
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SewTired
- Posts: 1736
- Joined: Thu Apr 16, 2015 8:33 am
- Location: Minneapolis area
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by SewTired » Sun Dec 31, 2017 11:39 am
Your pressure is still now quite optimal
She meant NOT quite optimal. Small mistype, but I thought I'd mention it in case it confused you.
Since my events are mostly RERAs, increasing just an increment every 4 nights should eliminate your RERAs. It typically takes less than 1 cm increase to get those gone.
Diabetes 2, RLS & bradycardia
Airsense For Her; Settings: range 8-12, Airfit P10 (M)
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Pugsy
- Posts: 65181
- Joined: Thu May 14, 2009 9:31 am
- Location: Missouri, USA
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by Pugsy » Sun Dec 31, 2017 12:04 pm
SewTired wrote:
She meant NOT quite optimal. Small mistype, but I thought I'd mention it in case it confused you.
Yep, typo....I will go fix that right now.
Another case of brain and fingers not working well together.
I may have to RISE but I refuse to SHINE.