Leak rate went up but AHI went down?

sleepyhead63 · Post by **sleepyhead63** » Sun Jul 29, 2007 10:36 am

I had a leak rate of .54 last night but my AHI was 2.4 my AI was 0.0 and my HI was 2.4 now my numbers went down considerably all I did was raise my pressure max. to 15. My average was 13.4 which was 1 cm higher than the night before. Is my leak rate high for these kind of numbers? Does this mean I needed to raise my pressure to maintain these numbers?

JimW · Post by **JimW** » Sun Jul 29, 2007 3:48 pm

What's represented is your 95th percentile leak rate; your overall leak rate may be considerably lower. I had a night recently where my 95th percentile was 0.56 L/sec, but my median leak rate was 0.06 L/sec. You could work to lower your leak rate a little more, but if your numbers stay good, I wouldn't be overly concerned.

At higher pressures, your leaks will increase somewhat. One other thing to look at - in another thread (viewtopic.php?t=22572&start=15,) you mentioned that you had your machine's mask setting as 'activa nasal mask.' Your profile picture is of the mirage swift nasal pillows. If, indeed, you're using the swift, you might want to change this in your machine to get a more accurate picture of how much unintended leak you're getting.

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