(08-06-2014, 09:11 AM)Ghandi Wrote: I noticed that my OA were very long. IT's ranging between 30 seconds and 45 seconds. I though the cpap machine was supposed to restart my breath as quickly as possible to avoid oxygen decrease or micro arousal, disrupting my sleep cycles. I mean if i stopped breathing for more than 40 seconds it must disrupt my sleep? Is there any way to improve that? Is the machine doing the job properly?
CPAP and APAP machines are NOT ventilators. In other words, when you are not breathing, these machines will NOT try to trigger an inhalation to make you breathe.
And even if they did, the pressure they generate is NOT enough to "blow" a collapsed airway open.
The way CPAP works is that the small amount of additional air pressure makes it harder
(but NOT impossible) for the airway to collapse in the first place. And by making it harder for the airway to collapse, the CPAP prevents
the vast majority of the events from happening in the first place. There is no expectation that a CPAP will prevent all
the events from happening. (Even people without OSA can have a few obstructive apneas every now and then.)
Now, I'm not a doctor and I don't know how common it is for OAs to last as long as you say many of yours do. And those really long OAs may indeed be a problem. That's something you should bring up with your sleep doc (NOT the tech) in my opinion. The doc may recommend a pressure increase in an effort to make it even harder for your upper airway to collapse if the length of the OAs is a concern.
Quote:My hypopneas are usually a big long breath followed by shallower breathing which at some point becomes a flat line for about 5 seconds. then the flow restarts.
We need to see this.
But a couple of things to keep in mind: These may or may not be real Hs that would be scored on a sleep test: The big long breath itself may indicate a (spontaneous) arousal and the shallower breathing pattern that follows may be a normal "sleep transition pattern." And in that case the EEG data on an in-lab sleep test might indicate the event started in WAKE and is not part of sleep disordered breathing at all. In other words, it's possible that some of the things your machine is recording are not real sleep disordered breathing hypopneas at all.
And given your low HI (0.98) this pattern is not repeating dozens and dozens of times each night, and that too indicates this may just be a normal response to falling back asleep after a spontaneous arousal/wake that is too short for you to remember in the morning.
Quote:My CA are shorter than my OA. somtimes the flow doest stop and if it does it's like for 5 or 9 seconds. I think it's combines with the breath becoming shallower.
A few CAs scored here and there are nothing to worry about. Many of them may not even be "real" in the sense of being something that would be scored on an in-lab sleep test. This is particularly true if the CAs are being scored at times during the night when you are likely transitioning to/from sleep.
Quote:Yesterday out of the blue my ahi went to 3. And some nigths it can go near 4. I did't feel any congestion (well yesterday i was really tired, completly out of energy when i went to bed)
Our sleep is not the same night after night after night. And sometimes it's just plain worse than usual.
Sometimes we can find a reason for a random bad night or two. And sometimes we can't. A long term poster on another forum jokingly refers to these random bad nights as "visits from the aliens"
In my own data I've noticed that my usually good AHI often increases dramatically a couple days before
I come down with a nasty head cold or the flu. It's reliable enough for me to regard a sudden increase in AHI as being an early heads up that I'm probably coming down with something.
Quote:Periodic Breathing 0.35
What preoccupies me is I've had a periodic breathing event. It was the first time. What does it mean ?
This is NOTHING to worry about. Again, even normal people have a bit of periodic breathing every now and then. And 0.35% of one random night spent in PB is "a very small bit" of PB.
Technically PB is nothing more than a pronounced waxing/waning breathing pattern where the cycle repeats every 1-2 minutes for a long enough period to actually be detected. PB becomes an issue if (and only if) the amount of time in PB is really excessive, is occurring on the vast majority of nights, and is frequently accompanied by CAs or Hs (or occasionally OAs) being scored at the nadir of almost all the breathing cycles. In this case, central sleep apnea may be the problem. Significant amounts of PB can also be an issue if the patient has moderate or severe congestive heart failure. In this case, the cause of the problem is the heart disease
(not sleep disordered breathing) and the effective treatment of the heart disease usually fixes the PB problem.
Quote:The technician isn't really heplfull and does't even like me to play with the confort settings and i'nt really happy about the fact that i'm monitoring my data via sleepyhead,so i though i'd post my story here. Any comment, feedback, tips or trick or insights would be apreciated.
Learn to endure the wet noodle whippings and/or request that a different tech be assigned to work with you.