hi there, another mixed apnea here

[cexer]

hello, since 2021, i'm suffering from sleep apnea.

medical care wasn't available till late.
then they gave me a jaw retainer or how it is called.

i tried to adjusted to the obstructive part
using oximeter data.

unforunately, there still are central apneas,
which seem cause me to just fetch seconds
of uninterrupted dreaming.

so much for my welcome post.

[Deborah K.]

It would help us to help you if you would post a redacted copy of your sleep study and an Oscar chart showing us how your nightly sleep is going. Right now the sleep study would help the most.

[cexer]

first of all, thanks for the warm welcome :-)

regarding data, i would be glad if i may come back to you later.
currently i have other questions, which are more pressing.
besides i doubt having exactly what you are looking for.

having the jaw retainer now, i see the central apneas
being worse and different where there are subzero temps at night.

the mentioned difference is, that i can't take a deep breath
after waking up from a central, in the respiratory arrest state.
instead, i have to work backwards through the central
from a small cough to a sufficiently deep breath.
i'm getting there easier if i initially breath even more air out.

with positive temperatures at night,
i still have central apneas, but they are less frequent
and deep-sleep is mostly spared. this is more bearable,
but being without a csa-therapy, i would most likely
continue whining when it's cold again.

is anybody else going through such ?
does the subzero thing have a special name or specific treatments ?
could someone hint me at a used or even broken resmed aircurve 11 asv ?

[OpalRose]

cexer,

It's a bit tough to advise on what type machine you need without seeing some data, at least your sleep report, (which you could upload here).

If you had a lot of CA's, then an ASV is appropriate.

You can try looking at Supplier #2 to see if they have a used one available.

NOTE: I edited your opening post as requested.

[BoxcarPete]

When you say it's cold outside, your problem is worse. Assuming that you have heat in your bedroom, the first thing that comes to mind would be humidity. I can't say why dry air would trigger you to have central apnea events that would make it harder to start breathing again once you wake, but it's the first thing that comes to mind about the situation. Have you tried using a bedside humidifier when the air is cold outside?

I used a mandibular advancement retainer for a year and experienced some bizarre effects on my heart rhythm during that time. It has since gone away when I stopped using the device, which isn't really proof that it was the cause but I suspect that it was. What I mean for you is, there might be some effect from the jaw retainer you are using which may not be clearly related to the device, but could be resolved with a PAP machine.

[cexer]

heating there, windows closed,
door slightly open such that co2 between 1000 and 1500 ppm,
humidity above 35% (now 40%), i will try something there.

is there a humidifier you could recommend ?
the devices i looked at produced a dizzling rain.
i could also put a wet towel on the radiator (sorry books).

the csa being a side effect is something to consider
but it isn't that the centrals are suddenly gone
if i take the retainer out.

[cexer]

yes, a pressure machine could be better plus it wouldn't eat my teeth.

supplyer 2 has not even had any aircurve asv. just occasionally ?
what would be the price of a new uptodate one ?

is there a cheap diagnostic device which records more than oxygen and heartrate ?
what qualifies for a central apneas and hypopneas in a sleep study ?
is there for instance a minimum desaturation/cardial arrest time ?
how would centrals look like on a oximeter ?

[BoxcarPete]

To answer your last set of questions in order:

I do not know of a low cost diagnostic device to record more than O2 and heart rate. There are numerous fitness-oriented wearables that make a guess at sleep stage in addition to those two parameters, but their data outputs aren't diagnostic quality.

Central apnea is defined as a stoppage in airflow that is not accompanied by respiratory effort. In order to determine what is truly central, there needs to be an accurate gage of physical respiratory effort. PAP machines typically use a different technique to determine if the airway is blocked or not, but it's less accurate.

The minimum time required to desaturate blood oxygen varies wildly by person. My overnight sleep study showed apnea clusters that would be dropping some members here down into the low 80s or maybe even worse than that, but my O2 nadir was 94. There should not be any cardial arrest time, if you are experiencing that you need a hospital, not a web forum.

Centrals on an oximeter would similarly look very different person by person.

[cexer]

respiratory arrest, i meant. i feel like a lonely case.

during my sleep study i was a little afraid of not having
my oximeter warning me.

my heartrhythm is ok, i guess,
and i don't even see a difference with and without retainer.
also i probably wouldn't know what to look for.

how does it feel the first time
if you finally have a device ?
which mask types are there ?

could you recommend a cheap supplementary oxygen equipment
to safe, what is left, over the worst periods ?

there are also some drugs for treating centrals.
does some of you have experiences, there ?

anything else which could help ?

you 3 are well ?

[cexer]

can't believe i haven't mentioned the hypopneas earlier.
they did, but for checking if the other stuff still occurs,
it was a retainer anyway.