High HI second sleep session
High HI second sleep session
I use an S8 Elite with an Airfit P10 mask. I recently added a Ruby adjustable chin strap to my gear and have been getting excellent results. My AHI is typically less than 1 and often less than .5. But, after waking to use the bathroom around 4 am and going back to sleep my second session AHI is typically much higher. It is usually 3 - 4. The breakdown usually shows that the higher number is composed mostly of a higher HI with the mask leakage and AI numbers roughly the same as the first part of the night. So when I go back to sleep for the second part of the night my HI number goes up. Any thoughts?
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Machine: ResMed AirSense™ 10 AutoSet™ CPAP Machine with HumidAir™ Heated Humidifier |
Mask: AirFit™ P10 Nasal Pillow CPAP Mask with Headgear |
Bob
Re: High HI second sleep session
Less than 5 is fantastic though, if you're not feeling anything negative I wouldn't be concerned with this
Re: High HI second sleep session
You don't say what time you wake up nor what time you went to bed but let's say you go to bed at 11 - 11 to 4 is 5hrs. and wake up at 7 - 4 to 7 is 3 hrs.rbrown3rd wrote:The breakdown usually shows that the higher number is composed mostly of a higher HI with the mask leakage and AI numbers roughly the same as the first part of the night. So when I go back to sleep for the second part of the night my HI number goes up. Any thoughts?
If you have the same # of event in 5 hrs you have in 3 hrs and we use math to figure the HI which one will have the higher index?
Does your machine break it down that way? Two separate HI's?
Re: High HI second sleep session
I'd say less than 5 is adequate, myself.sleepstar wrote:Less than 5 is fantastic though, if you're not feeling anything negative I wouldn't be concerned with this
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Re: High HI second sleep session
The S8 machines always tended to overstate HIs. When you look at your AI total reduce the HI by 50%.
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Machine: ResMed AirSense™ 10 AutoSet™ CPAP Machine with HumidAir™ Heated Humidifier |
Mask: Fisher & Paykel Vitera Full Face Mask with Headgear (S, M, or L Cushion) |
Additional Comments: Back up is S9 Autoset...... |
Re: High HI second sleep session
I think that sometimes higher AHI numbers during short sessions are from some awake/semi awake breathing irregularities getting flagged by the machine by mistake...similar to the way naps often report higher AHI.
I know often when I have that second sleep session close to when I would be normally waking up I tend to sometimes wake up sort of...and go back to sleep and wake up sort of and go back to sleep and our awake/semi awake breathing can fool the machine sometimes into thinking something is going on that really isn't going on.
I wouldn't spend much time worrying about it though unless it was something that happened frequently. Not much we can do about it anyway.
I know often when I have that second sleep session close to when I would be normally waking up I tend to sometimes wake up sort of...and go back to sleep and wake up sort of and go back to sleep and our awake/semi awake breathing can fool the machine sometimes into thinking something is going on that really isn't going on.
I wouldn't spend much time worrying about it though unless it was something that happened frequently. Not much we can do about it anyway.
_________________
Machine: AirCurve™ 10 VAuto BiLevel Machine with HumidAir™ Heated Humidifier |
Additional Comments: Mask Bleep Eclipse https://bleepsleep.com/the-eclipse/ |
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Re: High HI second sleep session
Yes, my machine breaks it down into two separate HI's.Guest wrote:You don't say what time you wake up nor what time you went to bed but let's say you go to bed at 11 - 11 to 4 is 5hrs. and wake up at 7 - 4 to 7 is 3 hrs.rbrown3rd wrote:The breakdown usually shows that the higher number is composed mostly of a higher HI with the mask leakage and AI numbers roughly the same as the first part of the night. So when I go back to sleep for the second part of the night my HI number goes up. Any thoughts?
If you have the same # of event in 5 hrs you have in 3 hrs and we use math to figure the HI which one will have the higher index?
Does your machine break it down that way? Two separate HI's?
_________________
Machine: ResMed AirSense™ 10 AutoSet™ CPAP Machine with HumidAir™ Heated Humidifier |
Mask: AirFit™ P10 Nasal Pillow CPAP Mask with Headgear |
Bob
Re: High HI second sleep session
I think you are right about it being indicative of the nature of my second sleep session. I was not so much worried about it as curious. I think your summary is a very probably explanation. I'm quite happy with the results I am getting since adding the chinstrap to my cpap gear. The last two nights my AHI numbers have been less than 1.Pugsy wrote:I think that sometimes higher AHI numbers during short sessions are from some awake/semi awake breathing irregularities getting flagged by the machine by mistake...similar to the way naps often report higher AHI.
I know often when I have that second sleep session close to when I would be normally waking up I tend to sometimes wake up sort of...and go back to sleep and wake up sort of and go back to sleep and our awake/semi awake breathing can fool the machine sometimes into thinking something is going on that really isn't going on.
I wouldn't spend much time worrying about it though unless it was something that happened frequently. Not much we can do about it anyway.
_________________
Machine: ResMed AirSense™ 10 AutoSet™ CPAP Machine with HumidAir™ Heated Humidifier |
Mask: AirFit™ P10 Nasal Pillow CPAP Mask with Headgear |
Bob