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+--- Thread: Can someone help explain what is happening between 4.30am and 5,30 am? (/Thread-Can-someone-help-explain-what-is-happening-between-4-30am-and-5-30-am)
Can someone help explain what is happening between 4.30am and 5,30 am? - Yardarm - 06-16-2024
From about 4.30 am for an hour, there appear to be a lot of clear airway events. Can anyone suggest why? Thanks in advance.
RE: Can someone help explain what is happening between 4.30am and 5,30 am? - brokensleep57 - 06-16-2024
Hi Yardam,
I'm not sure, but I'm guessing it's your position? Perhaps you are sleeping supine?
I'm having similar issues but with obstructive apneas/hypopneas. Yours appear to be central apneas. Were you diagnosed with central apneas? I don't know if central apneas can occur due to position like obstructive apneas.
Positional apneas usually show multiple events clustered together like your chart. See my chart from earlier today:
Today's chart supine (wedge pillow used)
[attachment=65807]
My chart the other day supine (same wedge pillow):
[attachment=65809]
I think my pressure needs to be increased, or I need to stay off my back. However, due to inconsistency I haven't tried pressure increase yet.
I'm not sure if that would be the same for you with central apneas.
I'm sure someone else on the forum can help.
RE: Can someone help explain what is happening between 4.30am and 5,30 am? - Yardarm - 06-16-2024
Thanks for that,
I've always slept on my side but it could be I roll onto my back. It doesn't happen every night but when it does, it's always at the same time.
As for pressure, if I increase it, I just swallow air unfortunately.
RE: Can someone help explain what is happening between 4.30am and 5,30 am? - Deborah K. - 06-16-2024
Did you have a lot of CAs in your sleep study? If you have a copy of your sleep study it would be good if you could post it. It would help us determine some things. If there were NOT a lot of CAs during your sleep study that would mean yours are treatment-emergent and will lessen as time passes.
Also, your therapy would be better if you raised your minimum pressure a bit. Set it at 6 or 7. This won't change your upper-pressure limit, so I don't think you will have more aerophagia. If you do, lower it by one digit for the next night.
RE: Can someone help explain what is happening between 4.30am and 5,30 am? - Yardarm - 06-16-2024
Thank you,
My sleep study was 2-3 years ago, as far as I recall there wasn't a lot of CA. If it is emergent and will lessen over time, how much time does it usually take?
I will try raising the minimum pressure, thanks for that tip.
RE: Can someone help explain what is happening between 4.30am and 5,30 am? - Sleeprider - 06-17-2024
Pretty much everything I see in this chart is central clusters. It is not positional apnea as there is no apparent obstruction or flow limitation. I'd like to see a minimum pressure of 6.0 and reduce EPR to setting 1. I think leaks are an issue here. If the CA pattern remains consistent, you're going to need a backup rate like ASV.
RE: Can someone help explain what is happening between 4.30am and 5,30 am? - Jay51 - 06-17-2024
You have a consistent mask leak the entire time you have the massive CA cluster also. Leaks from the mask can let CO2 escape and might contribute to CA's.