Mirage Liberty - fantastic night!

General Discussion on any topic relating to CPAP and/or Sleep Apnea.
User avatar
BleepingBeauty
Posts: 2454
Joined: Thu Apr 02, 2009 5:30 pm
Location: Aridzona ;-)

Re: Mirage Liberty - fantastic night!

Post by BleepingBeauty » Tue Feb 16, 2010 10:19 am

melissa1974 wrote:Well, there's good news and bad news. The bad news is that the shoelace get riding up just like the pantyhose strap did and I never did manage to get it just so. However, I did spent a lot of time adjusting the straps and the nasal pillows while looking in the mirror, and I got a really good seal! I actually slept for 6 and a half hours and had a leak rate of 0.0L/s!!!! I am really excited about that. However, my AHI was 8.0, but my AI was 1.3. So, of course I wish my AHI was lower, but I am really happy about controlling the leaks.

Can anyone explain to me why my AHI is so much higher than my AI? Which is more important? I am trying to figure it out.....an apnea is more dangerous than a hypopnea, right???

Thanks.
That's usually the case with ResMed machines, melissa - they report far more HI than other machines, due to the way they score events. That doesn't mean that the data being reported is wrong; it's just different from other manufacturers. Many here with ResMed machines mentally cut the HI number in half and then add that to the AI score, to arrive at a more comparable AHI. (If you do that with last night's numbers, your AHI is about 4.7.)

Apnea means a total obstruction and cessation of breathing for 10 seconds or more, whereas a hypopnea is a partial obstruction. So yes, an apnea is more dangerous than a hypopnea, as there's no air (i.e., no oxygen) getting through at all.

Congrats on your good night!
Veni, vidi, Velcro. I came, I saw, I stuck around.

Dx 11/07: AHI 107, central apnea, Cheyne Stokes respiration, moderate-severe O2 desats. (Simple OSA would be too easy. ;))

PR S1 ASV 950, DreamWear mask, F&P 150 humidifier, O2 @ 2L.