Chip or No Chip, that is the question?

[DonC]

Hi,
Last night was my fifth night on my AirCurve 10 ASV. My AHI has been in the ones for most of the time so imagine my horror when I looked at the clinical report on the machine and it said 5.8. I thought "let's look at this on SleepyHead" to see where the issues were. I opened the dock to get the SD Chip and lo and behold I had forgotten to put it in last night. Stupid of me.
I researched this on Apnea Board and found that id I put the chip back in it would retrieve the basic data. I did as instructed and brought the chip to my computer to see what SH said. There were no daily graphs BUT there was an AHI, and guess what it was; 1.18 - Hypop 1.1 and OAs 0.08. Just a quick edit - The hours were the same on both.
I know which one I want to believe but which one should I believe?
Thanks in advance.
Don

[DeepBreathing]

Some simple arithmetic will give you the answer. AHI = events / hrs. So if you slept 8 hours and your AHI was 5.8 you would have about 64 events for the night. If AHI was 1.18 you would have had 9 events (if my mental arithmetic is not too rusty).

[DonC]

Thanks very much Deep Breathing = but I don't know which number to believe. Which would you say is correct 1.18 or 5.8?
Don

[palerider]

Thanks very much Deep Breathing = but I don't know which number to believe. Which would you say is correct 1.18 or 5.8?
Don

they're probably both right, depending on when you looked at the screen on the machine.

[DeepBreathing]

Thanks very much Deep Breathing = but I don't know which number to believe. Which would you say is correct 1.18 or 5.8?
Don

Ok I didn't make myself abundantly clear, no doubt cos I was tired when I posted. Sleepyhead will give you the number of events recorded. I'm going from memory here, so forgive me if the details aren't exactly right: Open the "Events" tab just above the bar chart. You will see a summary of each kind of event. Add the apneas and hypopneas and the answer will be close to 9 or 44. Divide that by the number of hours you slept and the true answer will be revealed.

If you have ResScan you can double-check with that. The answer should be very similar to what SH gives you.