less than 10 seconds events

[cberistain]

I've been getting some very good results .. like practically no leaks and 0 - .2 events/hour.
But looking more carefully at the data, I see many "events" that are just less than 10 seconds.
Is there something I should do to reduce these (see attached screen grabs)

[pholynyk]

The 'event' you found at 6:37:25 looks to me like a delayed exhale - you were probably holding your breath while you changed position.

I also noticed the high flow rate at the beginning, while ramp was active. With a minimum pressure of 8 cmH2O, I think you could turn the ramp off and still be comfortable, and not feel like you had to work to get enough air.

[cberistain]

The 'event' you found at 6:37:25 looks to me like a delayed exhale - you were probably holding your breath while you changed position.

I also noticed the high flow rate at the beginning, while ramp was active. With a minimum pressure of 8 cmH2O, I think you could turn the ramp off and still be comfortable, and not feel like you had to work to get enough air.

Appreciate your input/analysis 

I will deactivate the ramp .. makes sense.
charlie

[cberistain]

My at home sleep study report said 11.5 events per hour. 40 OA's & 60 hypopneas. snoring time was 47%. below 88% of oximetry for 7.2% and below 80%1.6% of the time. Supine & lateral lying positions. Most events in the supine position.

the recommendation from the study was "don't sleep in the supine position" use "mechanical means" to prevent lying supine.   I half heartedly tried this but I could see from my fitbit that I was oxygen deficient a one to three times a night. So I requested the cpap machine. I think the machine is doing a fantastic job and I certainly feel much better ( after I worked through the mask leak issues). I get between 0 and 3 events per night.



Pre cpap, When I woke up or was woken up by an event, if I was in a supine position, and tried to expel air, the airway would shut off, mouth & nose. Inhaling was not a problem. If I exhaled slowly/softly I could breath .. after a few minutes when I was fully awake, I could breathe in the supine position without issue. If I rolled over on my side, right after I woke up, I could breath as long as I didn't push hard on the exhale. I'm assuming that when my neck muscles relax (i.e. I'm asleep), my tongue & throat work together to cut off the exhale.  Is that a good assumtion?

appreciate all the help/advice.

[cberistain]

The 'event' you found at 6:37:25 looks to me like a delayed exhale - you were probably holding your breath while you changed position.

I also noticed the high flow rate at the beginning, while ramp was active. With a minimum pressure of 8 cmH2O, I think you could turn the ramp off and still be comfortable, and not feel like you had to work to get enough air.

big difference last night with the ramp off ... screen shot attached .. also show that I do hold my breath as I get into bed. I start off sitting on the bed ready to get in, then put on the chin strap, cervical collar, and then the mask .. then I start the machine, listen to be sure no leaks, then get into bed, and finally turn over to get on my left side. I think that pause in breathing at about 22:11 is a good example of that.. thanks to you , I now understand how to better read the flow chart.

charlie