[Equipment] Backup machine

[SleepyWeasel]

I'm currently using a Resmed Aircurve 10 ST (bi-level) for treatment of central apnea.  I'm interested in picking up a used Resmed S9 to use as a backup and for camping.  What model is best suited for treatment of central apnea?

Does this machine take a DC input?  What voltage?

I'm interested in it because it appears to be somewhat more compact (with humidifier removed) and lighter than the Aircuve 10ST I have.  Just not sure about the power usage and option of DC input voltage.

Considerations are low weight, treatment of central apnea, low power consumption, available used or low cost...

Any other suggestions?

[Crimson Nape]

The S9 series uses a 3-pin plug for its 24v power.  Amazon has DC to DC power supplies for the S9, that are much cheaper in cost as opposed to a Resmed model.

I see that you are using an AC10-ST.  The regular S9 is a BIG drop in treatment.  I suggest that if you are going to get an S9, that you look for the S9 VPAP-ST.  This will allow you to compare apples to apples. However, from your description of having CAs, an ASV model would seem to be the machine of choice. It is designed for CA therapy.

- Red

[Sleeprider]

The heck with a backup, get the Resmed Aircurve 10 ASV from Supplier #2 for $1699. I know it's expensive, but so much better than the ST for central apnea. You will make the ST the backup. The machines run on 24 Volts DC power and will last several days on battery power using a Resmed DC converter with the humidifier and heated tube off. You will find the Aircurve 10 ASV lighter and easier to carry and to operate off of DC power.

[Gideon]

SR beat me too it, get an ASV for your primary and use the ST as the backup

[SleepyWeasel]

I like the idea of moving towards ASV.  I just started in August so I still have a little ways to go with insurance for the original machine then I'll shop for a used Aircurve ASV.

Thanks!

[Sleeprider]

Sleepy, in the meanwhile, how about posting a Daily Details graph from your current ST therapy. It would be interesting to see how it is working out for you.

[SleepyWeasel]

Thanks for asking.  Things are going well.  I'm down from a sleep study rate of 42-100+ AHI, all CSA.  My therapist is extremely satisfied.  I'm encouraged but wondering if it can improve.  Most nights I wake up and take off my mask for an hour or so or until my wife lets me know I'm snoring. There are a few nights when I can make it through.  I have had no problem at all falling asleep and I do feel much better than before starting therapy.  I have mental clarity, no morning headaches!!!, and a huge improvement in my general mood.  I am still tired and would like to nap over my lunch break  

You can see my AHI trend since starting on 11October2022.  It has improved and so have my hours of sleep each night.  In an attempt to improve my numbers even more I have returned to my original pressure of 8-12.  My therapist reduced my pressure to 7-11 because of aerophagia early on but the higher pressure doesn't cause me problems like it did when starting therapy.  I have also increased the trigger response from Med to High to Very High over several weeks.  Neither of these seemed to make any dramatic improvements.

I included a screenshot of one of the clusters to show some detail about what's going on.  This is typical for me.

Here are the settings apart from pressure:

Resp Rate  10
Ti Max  2.0s
Ti Min  0.3s
Rise time  300ms
Trigger  Very High
Cycle  Low




Any thoughts or recommended tweaks?

Regards,
Sleepy Weasel