Sleep Study Analysis

[yonchee1]

Hello Everyone,
I recently had my first two-part sleep study at my local hospital.
The results showed a fixed 8cm/hg was the best setting for my therapy.
I question this because, according to OSCAR I have mostly central apneas
and not obstructive. I also at times have cheyne-stokes-respiration. I thought
for sure the results of my sleep study would have certainly questioned my
standard Resmed 10 Autoset as the best choice for my therapy. The sleep
tech said I did not do well on Bi-Level. I have tried several pressure settings
and EPR on and off. I am presently at 8.4 cm/hg with AHI numbers ranging
from 5-16. Am I putting to much emphasis on my AHI numbers, 5 or less indicates
great therapy and not on average around 8.

[Respirator99]

Hello Everyone,
I recently had my first two-part sleep study at my local hospital.
The results showed a fixed 8cm/hg was the best setting for my therapy.
I question this because, according to OSCAR I have mostly central apneas
and not obstructive. I also at times have cheyne-stokes-respiration. I thought
for sure the results of my sleep study would have certainly questioned my
standard Resmed 10 Autoset as the best choice for my therapy. The sleep
tech said I did not do well on Bi-Level. I have tried several pressure settings
and EPR on and off. I am presently at 8.4 cm/hg with AHI numbers ranging
from 5-16. Am I putting to much emphasis on my AHI numbers, 5 or less indicates
great therapy and not on average around 8.

Welcome to the forum. Before we go any further, please read this thread: viewtopic/t172378/Sticky--Newbies-PLEAS ... STING.html

A couple of quick comments on what you have written:

1. The pressure measurement on a CPAP device is cmH2O, not cmHg. Quite a difference.

2. It's not uncommon for new users to develop central apnea - this usually goes away of its own accord, though it can become persistent.

3. If you're questioning the results of a sleep study, please post a copy of the report here. Ensure you erase any personal ID. We need the full report including charts and tables.

4. Please post Oscar charts so we can see what's going on. Note: You can't post them directly - use a third party hosting service like Imgur and provide a link. Alternatively use SleepHQ and provide a link.

5. Please keep all follow-up discussion in this same thread.

[robysue1]

I question this because, according to OSCAR I have mostly central apneas
and not obstructive. I also at times have cheyne-stokes-respiration.

1) Your Resmed 10 AutoSet cannot tell when you are awake and when you are asleep. It is quite possible that some or all of those machine scored "central apneas" are normal, sleep transition centrals that would not be scored on an in-lab PSG.

2) Breathing that Resmed/Oscar labels as cheyne-stokes respiration is most often not real, genuine CSR, particularly in people who have no history of heart disease.

3) Post some Oscar data so we can see what you are talking about.

I thought
for sure the results of my sleep study would have certainly questioned my
standard Resmed 10 Autoset as the best choice for my therapy.

Why? Can you post the sleep study results themselves?

The sleep
tech said I did not do well on Bi-Level. I have tried several pressure settings
and EPR on and off. I am presently at 8.4 cm/hg with AHI numbers ranging
from 5-16. Am I putting to much emphasis on my AHI numbers, 5 or less indicates
great therapy and not on average around 8.

Post the data. And let us know how much time you spend awake tossing and turning while trying to sleep with the mask on your nose and the machine running.