Free CPAP Advice and Sleep Apnea Treatment Help Board • View topic - Usual practice? Overnight oximetry to get sleep study
FAQ
It is currently Tue Jul 23, 2019 1:54 pm

As an Amazon Associate, I earn from qualifying purchases.
Please consider a small PayPal donation to FreeCPAPAdvice.com above.Thank you so much for your support!



Author Message
bige1030
Unread post  Post subject: Usual practice? Overnight oximetry to get sleep study  |  Posted: Wed May 15, 2019 9:20 pm

Joined: Wed May 15, 2019 8:27 pm
Posts: 5
PAP Mask: ResMed AirTouch F20
PAP Machine: ResMed AirSense 10 AutoSet
Humidifier: Built into machine
Pressure Setting: 12-17 EPR 3

Offline
Just wondering if what I went through to get my diagnosis is a usual practice. When I asked my primary care physician (PCP) about the possibility of having sleep apnea, we went through sleepiness and me sometimes noticing myself snort myself awake and being told I snore. I am obese and have high blood pressure. Classic sleep apnea case, right? Well, instead of sending me right away for a sleep study, my PCP wanted me to do an overnight oximetry to see if I needed it. Of course, I "failed" with flying colors and was referred for a sleep study within 2 hours of turning in the oximeter.

My question: Is it a usual practice for overnight oximetry to be used to determine who needs a sleep study like it was with me?


Top
diamaunt
Unread post  Post subject: Re: Usual practice? Overnight oximetry to get sleep study  |  Posted: Wed May 15, 2019 11:17 pm
User avatar

Joined: Wed Mar 02, 2016 2:26 am
Posts: 2419
Location: Dallas(ish)
PAP Mask: Resmed P10
PAP Machine: Resmed S9 vpap auto
Pressure Setting: 18/13-25/19

Offline
bige1030 wrote:
I am obese and have high blood pressure. Classic sleep apnea case, right?

In the old way of thinking, sure.

These days, OSA is for anybody, not just fat old men.

bige1030 wrote:
Well, instead of sending me right away for a sleep study, my PCP wanted me to do an overnight oximetry to see if I needed it. Of course, I "failed" with flying colors and was referred for a sleep study within 2 hours of turning in the oximeter.

My question: Is it a usual practice for overnight oximetry to be used to determine who needs a sleep study like it was with me?

It's a cheap screening method of dubious utility, since it can't rule out OSA.

_________________
Sleepyhead Info
How to format your charts


Top
Pugsy
Unread post  Post subject: Re: Usual practice? Overnight oximetry to get sleep study  |  Posted: Thu May 16, 2019 6:12 am
User avatar

Joined: Wed Aug 02, 2017 8:01 pm
Posts: 1255
PAP Mask: Bleep/DreamPort nasal mask
PAP Machine: ResMed AirSense 10 AutoSet for Her
Humidifier: ResMed AirSense 10
Pressure Setting: Depends on the machine as I actually have more than one

Offline
Going by oxygen levels alone doesn't mean that there is no OSA.
I have a friend with OSA...60 plus events per hour and she had an in lab sleep study which includes the pulse ox thing.
Her oxygen levels never really dropped all that much...the lowest it went to was 94% from a baseline of 96 or 97%.
People don't always have a massive drop in O2 levels with OSA.

So the pulse ox can only tell a person if the O2 levels drop and it might be OSA....it can't tell you there is no OSA though...all it might say is the O2 levels don't drop much and that doesn't necessarily mean no OSA.


Top
bige1030
Unread post  Post subject: Re: Usual practice? Overnight oximetry to get sleep study  |  Posted: Sun May 26, 2019 9:59 pm

Joined: Wed May 15, 2019 8:27 pm
Posts: 5
PAP Mask: ResMed AirTouch F20
PAP Machine: ResMed AirSense 10 AutoSet
Humidifier: Built into machine
Pressure Setting: 12-17 EPR 3

Offline
Thanks for the feedback. I thought it was just delaying me from getting a sleep study. I didn't realize how dangerous it could be. I'm just wondering if using overnight oximetry to try to rule out sleep apnea is a common practice or has any evidence to support it. I doubt either is true, and that has me wondering how reliable my PCP is.


Top
Pugsy
Unread post  Post subject: Re: Usual practice? Overnight oximetry to get sleep study  |  Posted: Mon May 27, 2019 5:31 am
User avatar

Joined: Wed Aug 02, 2017 8:01 pm
Posts: 1255
PAP Mask: Bleep/DreamPort nasal mask
PAP Machine: ResMed AirSense 10 AutoSet for Her
Humidifier: ResMed AirSense 10
Pressure Setting: Depends on the machine as I actually have more than one

Offline
It's a fairly common screening tool but it (like anything in medicine) comes with some limitations and isn't the easy end all tool.

What scares me about using it alone is that
1....people who are up the DeNile river will say "see I don't desat so I don't have OSA and don't need cpap" ...and they refuse further evaluation or treatment because they are looking for a reason to not use cpap because they don't want to use cpap
2....while it can give strong indications of OSA if a person does have desats it doesn't offer much help when a person is one of the few who have OSA and don't desat.

It has its place in the world of screening tools but people need to understand the limitations.


Top
Display posts from previous:  Sort by  
Print view

Who is online
Users browsing this forum: No registered users and 0 guests
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum
Jump to:  
cron

Delete all board cookies | The team | All times are UTC - 8 hours [ DST ]

Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
DAJ Glass 2 template created by Dustin Baccetti
id="Mask Bright" style="width:728px;margin:auto;float:center";z-index:8">