My readings before & after adjustments, do not make sense?

General Discussion on any topic relating to CPAP and/or Sleep Apnea.
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red1
Posts: 90
Joined: Sat Oct 22, 2011 12:13 am

My readings before & after adjustments, do not make sense?

Post by red1 » Sun Nov 06, 2011 3:36 pm

Hello everyone,

I cannot make any sense out of my readings before & after slight adjustment of pressure. A adjustment was necessary as the previous pressure of 6.6 was not controling the AHI.

My EPR is 2 & full time. Swift FX Mask, S8 Elite 2.

I do understand how the AI increases & the HI slightly decrease & yet the overall AHI stays practically the same. Is increasing the pressure a bad idea? Is it not better to have lower AI's & higher Hi's as opposed to Higher AI's & lower Lower HI's if the AHI is almost the same in the end? How am I suppose to lower both of these, if increasing pressure just lowers the Hi & raises the Ai's? Also the time in apneas seems to increase with pressure.

Thanks. Rick

Initial Setting----------------------------------------------------------------First minor increase-----------------------------------------------------Second minor increase

Pressure 6.6 ---------------------------------------------------------------- Pressure 7.0 ------------------------------------------------------------Pressure 7.6

Apnea Index 3.2 ------------------------------------------------------------Apnea Index 4.5---------------------------------------------------------Apnea Index 7.0
Hypopnea index 10.2-------------------------------------------------------Hypopnea index 9.2-----------------------------------------------------Hypopnea index 6.4
AHI 13.4 ----------------------------------------------------------------------AHI 13.7------------------------------------------------------------------AHI 13.4
% time in apnea 1.2 ------------------------------------------------------ % Time in Apnea 1.9-----------------------------------------------------% Time in Apnea 2.8

Leak Median 0.0-------------------------------------------------------------Leak Median 2.4----------------------------------------------------------Leak Median 0.0
95 percentile 9.6-------------------------------------------------------------95 percentile 21.6--------------------------------------------------------95 percentile 19.2
Maximum 20.4-------------------------------------------------------------- Maximum 22.8---------------------------------------------------------- Maximum 26.4

Usage 9.39 Hours------------------------------------------------------------Usage 6.34 Hours---------------------------------------------------------Usage 5.34 Hours
Last edited by red1 on Sun Nov 06, 2011 6:24 pm, edited 2 times in total.
Air Curve 10 VAuto
Swift FX Nasal

HoseCrusher
Posts: 2744
Joined: Tue Oct 12, 2010 6:42 pm

Re: My readings before & after adjustments, do not make sense?

Post by HoseCrusher » Sun Nov 06, 2011 4:41 pm

You probably should concentrate on the AI numbers. When you find the pressure that gives you the lowest AI, you can then tweak a little more to see what happens with the AHI.

Keep in mind that the S8 scores HI a little higher than other machines and its scoring was changed with the S9.

_________________
Mask: Brevida™ Nasal Pillow CPAP Mask with Headgear
Additional Comments: Machine is an AirSense 10 AutoSet For Her with Heated Humidifier.
SpO2 96+% and holding...

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LSAT
Posts: 13412
Joined: Sun Nov 16, 2008 10:11 am
Location: SE Wisconsin

Re: My readings before & after adjustments, do not make sense?

Post by LSAT » Sun Nov 06, 2011 5:07 pm

Go back to day 1 settings and LEAVE THEM ALONE for at least a week. There is no point to making setting changes after only 1 night.