Post Reply 
[Equipment] Are diagnosed pressure index based on faulty feedback
Author Message
Earthfuture Offline

Members

Posts: 7
Joined: Feb 2016

Machine: Phillips Dreamstation auto cpap
Mask Type: Nasal mask
Mask Make & Model: ResMed Swift FX Bella Mask
Humidifier: Dreamstation Hum Core pack
CPAP Pressure: 7
CPAP Software: Not using software

Other Comments: seeking a good night sleep

Sex: Female
Location: Las Vegas Nevada

Post: #1
Question Are diagnosed pressure index based on faulty feedback
I'm concerned that my cpap machine in generating false readings. This has causing my doctor to increase my pressure number. Last night I laid awake for two hours with cpap therapy equipment on, since no sleep visited me, I decided to confirm my suspicion regarding the AHI and other feedback from the machine. The AHI reading was at a whopping 30, the periodic breathing at 10 %! These numbers couldn't possibly be correct, I hadn't fallen asleep yet and I was breathing just fine. I did have to fix my mask several times to keep from leaking air. Has anyone found a similar problem with theier equipment?



02-28-2016 11:44 AM
Find all posts by this user Post Reply Quote this message in a reply

Donate to Apnea Board
cpdaniel Offline

Preferred Members

Posts: 61
Joined: Nov 2015

Machine: Resmed AirCurve 10 VAuto
Mask Type: Full face mask
Mask Make & Model: F&P SimPlus
Humidifier: Built-in
CPAP Pressure: IPAP: 9-17, PS: 4
CPAP Software: ResScan SleepyHead

Other Comments: Untreated AHI: 58. Undiagnosed years: 20+

Sex: Male
Location: Central California, USA

Post: #2
RE: Are diagnosed pressure index based on faulty feedback
The machine is incapable of distinguishing awake time from asleep time - and the number are only valid if you're truly asleep. Awake breathing is a disordered mess compared to asleep breathing and can easily fool the machine into misidentifying all sort of events.

Unless you're asleep, the numbers mean nothing.
02-28-2016 12:10 PM
Find all posts by this user Post Reply Quote this message in a reply
PaytonA Online
Wiki Editor
Monitors

Posts: 3,000
Joined: Dec 2013

Machine: ResMed S9 VPAP Auto
Mask Type: Full face mask
Mask Make & Model: Resmed Mirage Quattro
Humidifier: H5i(distilled-top up)
CPAP Pressure: VAuto MinE14.0 MaxI 20.6 PS4.0
CPAP Software: ResScan SleepyHead

Other Comments:

Sex: Male
Location: Orange County,California

Post: #3
RE: Are diagnosed pressure index based on faulty feedback
It may not be your machine creating false readings. It may be you. When we are awake we do a lot of things that would be considered an apnea type event when we are asleep. The machine does not know when you are awake. It only knows that it has been activated so it will record what it finds. Another thing that muddies a picture like this is the fact that often when people are certain that they were totally awake for a period, in reality they were slipping in and out of a very light sleep and so we get what we call sleep/wake junk.

Don't be mad at your machine, it just does not know any better yet.

Best Regards,

PaytonA
02-28-2016 12:15 PM
Find all posts by this user Post Reply Quote this message in a reply

Donate to Apnea Board
Earthfuture Offline

Members

Posts: 7
Joined: Feb 2016

Machine: Phillips Dreamstation auto cpap
Mask Type: Nasal mask
Mask Make & Model: ResMed Swift FX Bella Mask
Humidifier: Dreamstation Hum Core pack
CPAP Pressure: 7
CPAP Software: Not using software

Other Comments: seeking a good night sleep

Sex: Female
Location: Las Vegas Nevada

Post: #4
RE: Are diagnosed pressure index based on faulty feedback
(02-28-2016 12:10 PM)cpdaniel Wrote:  The machine is incapable of distinguishing awake time from asleep time - and the number are only valid if you're truly asleep. Awake breathing is a disordered mess compared to asleep breathing and can easily fool the machine into misidentifying all sort of events.

Unless you're asleep, the numbers mean nothing.

Thanks!

That is my fear that those numbers mean nothing! yet doctors is increasing the pressure setting based on those meaningless numbers! I think I'll toss the prescription in the waste basket and learn to adjust the pressure myself according to how I feel. But not sure its a good idea.
02-28-2016 01:07 PM
Find all posts by this user Post Reply Quote this message in a reply
cpdaniel Offline

Preferred Members

Posts: 61
Joined: Nov 2015

Machine: Resmed AirCurve 10 VAuto
Mask Type: Full face mask
Mask Make & Model: F&P SimPlus
Humidifier: Built-in
CPAP Pressure: IPAP: 9-17, PS: 4
CPAP Software: ResScan SleepyHead

Other Comments: Untreated AHI: 58. Undiagnosed years: 20+

Sex: Male
Location: Central California, USA

Post: #5
RE: Are diagnosed pressure index based on faulty feedback
(02-28-2016 01:07 PM)Earthfuture Wrote:  That is my fear that those numbers mean nothing! yet doctors is increasing the pressure setting based on those meaningless numbers! I think I'll toss the prescription in the waste basket and learn to adjust the pressure myself according to how I feel. But not sure its a good idea.

You'll find many on this board advocate that it Is in fact a good idea. Unless you have some really unusual breathing issues, you're likely just as well off, and frequently better off, by using an autoset CPAP and letting it figure out the pressure you need.

Do make sure you're using a fully data capable machine so that you can look at your data in SleepyHead. There are many long time PAP users on this and other forums who will help you get your treatment dialed in.
02-28-2016 03:36 PM
Find all posts by this user Post Reply Quote this message in a reply

Donate to Apnea Board
trish6hundred Offline

Advisory Members

Posts: 6,424
Joined: May 2012

Machine: Resmed S9 AutoSet for Her
Mask Type: Full face mask
Mask Make & Model: Fisher & Paykel Simplus
Humidifier: H5i Heated Humidifier
CPAP Pressure: 10 - 7-20 Cm H2O
CPAP Software: Not using software

Other Comments: I started CPAP in 2008. Totally blind since birth.

Sex: Female
Location: Missouri, USA

Post: #6
RE: Are diagnosed pressure index based on faulty feedback
Hi Earthfuture,
WELCOME! to the forum.!
I encourage you to keep your prescription. If you ever buy CPAP supplies on line, the suppliers will need your prescription on file.
Hang in there for more responses to your post and much success to you with your CPAP therapy.

trish6hundred
02-28-2016 07:30 PM
Find all posts by this user Post Reply Quote this message in a reply
Post Reply 


Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  Which disturbs sleep most? High Pressure or Changing Pressure Rcgop 7 1,217 11-10-2016 07:37 PM
Last Post: Sleep2Snore
  AHI index has taken a nose dive the past month pdbabb66 32 1,311 11-09-2016 05:58 PM
Last Post: pdbabb66
  Would Welcome Your Feedback About This harmon k 18 665 10-29-2016 05:48 PM
Last Post: PoolQ
  Ordered a Auto CPAP / Was diagnosed with Sleep Apnea jakthebomb 15 776 10-18-2016 08:00 AM
Last Post: southerndoc
  was diagnosed with apnea 10 years ago.... last sleep study came back negative LB1982 13 1,068 10-08-2016 07:34 PM
Last Post: lab rat
  newly diagnosed-resmed question mummadee 3 332 09-18-2016 06:48 AM
Last Post: cate1898
  Just Diagnosed - Starting Treatment SleepySleeps 30 1,189 09-12-2016 03:14 PM
Last Post: SleepySleeps

Forum Jump:

Who's Online (Complete List)