Central Hypopneas suddenly!

[Kingsway]

I recetly went back to my old Airsense 10 for a couple of weeks, in order to be able to use its humidifier - but aslo to be able to use OSCAR to have a look at my progress.

This was very useful as I could narrow down my settings, and get some of the lowest AHI figures I'd ever seen (as low as 0.3)

I've now gone back to my official machine (Sefam S.Box - as supplied by my local clinic - with no humidifier other than my DIY one) 

Using the Airsense and Oscar - I  rarely see any CA events reported :

   




   However, when I go back to the S.Box and the Sefam Analyze software (using similar settings) , I can get quite a few groups of Central Hypopneas

   


I'm wondering if one machine/ or software is doing a better job than  the other...?

Do I need to worry about it??

[gainerfull]

Why would you decide to use the inferior device with no humidification and less customization?

[Kingsway]

Why would you decide to use the inferior device with no humidification and less customization?

Fair question!  -

Because I am being treated - at no cost (machines, masks etc etc etc) -  by my NHS Health Trust Clinic.   They monitor my compliance using the Sefam Machine that they supplied. Non compliance could jeapodise my Licence to Drive...   BTW I will be getting a humidifier when they come into stock - but its been more than two months...)

I may just try to ask the Clinic at some point - but they seem to monitor hours used and AHI + Sleepiness scale only....   It's possble my waveforms might be reviewed by a doctor at some point - but I wouldnt like to count on it!    On  my last visit, the nurse didn't appear to be aware that I had not used the SEFAM machine at all for a period of four weeks in the previous six months.  

They also said that at my annual review - which will be done over the phone -  they will want want hours-used, plus 90% pressure reading,  and  average AHI  !

I'm hoping one of the knowledgible folk hereabouts - can advise if  they think I need to take it further with the CA's

[Gideon]

Both examples are arousals preceding the event and and the "centrals" are you responding to the arousal.

Neither chart provides any indication of why you had the arousal.

[Sleeprider]

Agree with Gideon. I see no suggestion this is a central event other than the way it is flagged on the Resmed. There is a large breath and two smaller breaths ahead of the pause. I think this is a shift in position. The Sefam shows periodic breathing that may be central or a normal response to some CO2 balance issues.