(04-26-2012, 06:34 PM)b360155 Wrote: Hey G.U.B., I was just reading your OP again and notice you make reference to "Total Leak". I'm not sure how Respironics machines measure leaks as far as what is acceptable or not. I have a ResMed S9 Autoset and they score you as far as "unintentional leaks" with anything under 24.0 l/min deemed to be acceptable as the machine can compensate for it. I looked up the flow rate chart for the Resmed Ultra Mirage which I'm attaching here:
The way I believe you read this chart (maybe somebody else can confirm or refute this) is that for your pressure range of 8 to 12, the intentional or acceptable leak rate is 32 to 41 l/min. Adding 24 l/min unintentional but still acceptable leak rate to these numbers would result in 56 to 65 l/min Total Leak, as being an acceptable level. So if you have 95% Total Leaks of 64 to 70, maybe your leaks aren't really too bad after all??? I may be way off base with this post, but just asking if this is a possibility?
thanks for that. my system one doesn't give leak data like the resmed but i do also use encore viewer which is a pr product. it identifies what it considers as large leaks. i told you the sleepyhead numbers for last night. encore for the same data tells me 67 minutes total in large leak and 21% of the night in large leak with the average leak being 44.
here is the graph from sleepyhead:
here is the graph from encore viewer: