New machine, different results

hardball · Post by **hardball** » Sat May 06, 2017 10:20 am

I've been on CPAP (ResMed AirSense 10) for about 45 days. 4 days ago, the motor went out on my original unit, so I took it back and got another brand new unit (ResMed AirSense10). Prior to the original machine going bad, I was had an AHI of about 2. Now, with the new unit (3 nights use), and all settings being equal, I'm up close to 5. Any idea what might be going on?

LSAT · Post by **LSAT** » Sat May 06, 2017 12:47 pm

If you are sure ALL settings are the same, I have no idea.

Julie · Post by **Julie** » Sat May 06, 2017 1:03 pm

Check if the EPR (Exhalation pressure relief) setting was on when you got it, and at a high setting of its own. EPR can cause AHIs to go up a bit.

TASmart · Post by **TASmart** » Sat May 06, 2017 3:49 pm

xxyzx wrote:
hardball wrote:I've been on CPAP (ResMed AirSense 10) for about 45 days. 4 days ago, the motor went out on my original unit, so I took it back and got another brand new unit (ResMed AirSense10). Prior to the original machine going bad, I was had an AHI of about 2. Now, with the new unit (3 nights use), and all settings being equal, I'm up close to 5. Any idea what might be going on?
============================================

manufacturing tolerances perhaps
you could be up to +/- 2 total cms if they all were off the same direction

or defective parts somehow causing different pressures actually delivered to you

or they defaulted some option that is different

use the clinic menu and verify that absolutely everything is the same as before
you did check the old one and document them all before you started using it didnt you ?

The Resmed 10 spec for pressure is +/- 0.5 cm h20, so the max difference is 1, not 2.

Have you got Sleepyhead plots we can look at, there may be adjustments you can make.

Hannibal 2 · Post by **Hannibal 2** » Sat May 06, 2017 3:54 pm

hardball wrote:I've been on CPAP (ResMed AirSense 10) for about 45 days. 4 days ago, the motor went out on my original unit, so I took it back and got another brand new unit (ResMed AirSense10). Prior to the original machine going bad, I was had an AHI of about 2. Now, with the new unit (3 nights use), and all settings being equal, I'm up close to 5. Any idea what might be going on?

You had a faulty machine so you cannot compare, give it a few more days for your body to adjust and see where you are. AHI close to 5 is nothing to be too concerned about, how are you sleeping and how do you feel?

TASmart · Post by **TASmart** » Sat May 06, 2017 7:19 pm

xxyzx wrote:
TASmart wrote:
xxyzx wrote:
hardball wrote:I've been on CPAP (ResMed AirSense 10) for about 45 days. 4 days ago, the motor went out on my original unit, so I took it back and got another brand new unit (ResMed AirSense10). Prior to the original machine going bad, I was had an AHI of about 2. Now, with the new unit (3 nights use), and all settings being equal, I'm up close to 5. Any idea what might be going on?
============================================

manufacturing tolerances perhaps
you could be up to +/- 2 total cms if they all were off the same direction

or defective parts somehow causing different pressures actually delivered to you

or they defaulted some option that is different

use the clinic menu and verify that absolutely everything is the same as before
you did check the old one and document them all before you started using it didnt you ?
The Resmed 10 spec for pressure is +/- 0.5 cm h20, so the max difference is 1, not 2.

Have you got Sleepyhead plots we can look at, there may be adjustments you can make.
======================

that is for the pumps

add in mask differences
leaks
other factors
measurement errors
hose resistance

the worst case can be a more than 1

Same mask, leaks are corrected for unless they are large, mystery factors? Same hose. You really don't know what you are talking about do you? You should try and read the clinical manual sometime.

New machine, different results

New machine, different results

Re: New machine, different results

Re: New machine, different results

Re: New machine, different results

Re: New machine, different results

Re: New machine, different results