03-13-2013, 09:15 AM
(This post was last modified: 03-13-2013, 09:16 AM by robgb.)
This morning I woke up feeling as if I had gotten a terrific night's sleep. As always, I checked my stats in Sleepyhead and was surprised to discover that my AHI was 10.5.
What I noticed in the graphs, however, is that I had SEVERAL obstructive apneas between 11:00 p.m. and 11:30 p.m. But the next seven hours were relatively incident free. Smooth sailing.
I can only assume that the rough half hour was because of the position I was sleeping in. But I'm curious to know why AHI is averaged out the way it is, because if you go on that one stat alone, it's very misleading.
Obviously, it's better to have a low AHI, but if the majority of the incidents happened in one large cluster over a short period of time, it seems to me that that higher AHI really means nothing in regard to your overall sleep.
Am I wrong about this?
I had noted this also in another thread but seems to me AHI is a somewhat poor indicator of sleep quality unless that number is very high. If you have an AHI of 60, your sleep is definitely going to be of poor quality but if it is, say 10, it may or may not be bad.
Having 20 events in 1.5 hours then having no events for the next 7 means you probably got some good sleep versus having 20 events scattered throughout the night.
My 2 cents anyways (no science to back it up :-) )