Post Reply 
Resp rate drop off before waking
Author Message
sclaire Offline

New Members

Posts: 3
Joined: Jul 2016

Machine: resMed10
Mask Type: Nasal pillows
Mask Make & Model: ResMed
Humidifier: unsure
CPAP Pressure: 7
CPAP Software: SleepyHead

Other Comments:

Sex: Female
Location: Canada

Post: #1
Resp rate drop off before waking
Hello - another newbie here. Can anyone tell me why a resp rate would drop really low just before waking up? Is that common?

Thanks!
09-07-2016 06:33 PM
Find all posts by this user Post Reply Quote this message in a reply

Donate to Apnea Board
justMongo Offline

Monitors

Posts: 3,853
Joined: Sep 2013

Machine: ResMed VPAP Auto (S9)
Mask Type: Full face mask
Mask Make & Model: ResMed Mirage Quattro
Humidifier: ResMed H5i
CPAP Pressure: 18 IPAPmax - 11 EPAPmin, PS=5
CPAP Software: Other Software

Other Comments: μολὼν λαβέ

Sex: Male
Location: Калифорния

Post: #2
RE: Resp rate drop off before waking
With so little information -- a guess would be that you are in REM sleep.
Respiratory rate varies throughout the night and in the different phases of sleep.

Welcome

INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
09-07-2016 06:41 PM
Find all posts by this user Post Reply Quote this message in a reply
trish6hundred Offline

Advisory Members

Posts: 6,451
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: #3
RE: Resp rate drop off before waking
Hi sclaire,
WELCOME! to the forum.!
Which mask and machine do you have?
Hang in there for more answers to your question, good luck to you with your CPAP therapy.

trish6hundred
09-07-2016 06:48 PM
Find all posts by this user Post Reply Quote this message in a reply

Donate to Apnea Board
cate1898 Offline

Advisory Members

Posts: 784
Joined: Aug 2015

Machine: PR System One 560BT Auto
Mask Type: Nasal pillows
Mask Make & Model: P10's/backup-DreamWear
Humidifier: PR attached
CPAP Pressure: 8.5 - 13. A-Flex 3
CPAP Software: SleepyHead

Other Comments: Began CPAP Therapy Sept. 11, 2015. Hx Hypertension, Post Graves Disease, chronic migraines.

Sex: Female
Location: Southern Ontario//SW Florida

Post: #4
RE: Resp rate drop off before waking
Hey sclaire and welcome to the forum! Glad you found us!

There's a link above for SleepyHead software that you can download to look at the data on your machine's SD card. Don't forget to slide the little switch on your SD card to the locked position before it goes in your computer and unlock it before re-inserting it into your machine. And it would be really helpful if you would update your user profile with your machine type, pressure (range) being currently used, mask type etc etc. Even if you are still in the trialling stages!

APNEABOARD - A great place to be if you're a hosehead!! Rolleyes

-------------------------------------------------------------------------------------------------
EVERY ACCOMPLISHMENT BEGINS WITH THE DECISION TO TRY!
09-07-2016 06:53 PM
Find all posts by this user Post Reply Quote this message in a reply
AshSF Online

Advisory Members

Posts: 356
Joined: Oct 2014

Machine: PRS1 D560TS
Mask Type: Nasal pillows
Mask Make & Model: ResMed P10, Bkup: Airfit F10 & Quattro Air
Humidifier: PRS1 60 series with Heated Tube
CPAP Pressure: 8 - 8 w/ Aflex 3
CPAP Software: SleepyHead

Other Comments: Using APAP mode with fixed pressure

Sex: Male
Location:

Post: #5
RE: Resp rate drop off before waking
I would second Mongo's assessment that you were in REM sleep. In this sleep stage, your respiratory rate does drop. You probably go into REM multiple times in the night. Look at your resp rate for the whole night and you may find more time intervals where resp rate falls a bit.

Do you remember dreaming just before you woke up. That would typically mean REM sleep.
And if you woke up without an alarm, that also means you just came from deep sleep to the shallow.
09-09-2016 12:08 AM
Find all posts by this user Post Reply Quote this message in a reply

Donate to Apnea Board
rkl122 Offline

Preferred Members

Posts: 74
Joined: Apr 2016

Machine: Philips Respironics System One 560P (Auto, Aflex, 60 Series)
Mask Type: Nasal pillows
Mask Make & Model: PR Dreamware Frame Med, Pillow MW
Humidifier: Remstar System One - Hose Unheated
CPAP Pressure: low 8.5, high 12.5, expting
CPAP Software: SleepyHead EncoreBasic

Other Comments:

Sex: Male
Location: NJ

Post: #6
RE: Resp rate drop off before waking
(09-09-2016 12:08 AM)AshSF Wrote:  ...........you were in REM sleep. In this sleep stage, your respiratory rate does drop...........
I've seen this assertion in the forums several times. My searching indicates that the respiration rate can go in either direction relative to non-REM sleep, and there are several references that say it increases.

This is a point of interest for me, since I frequently get the respiration bump highlighted in the image below. The bump goes from ~15 breaths/min to 20+, and it appears many nights, and at roughly the same elapsed time. (It's also characterized by few or no recorded events.) Since I sometimes wake right after it and remember that I'd just been dreaming, I wondered why it wasn't a dip instead of a bump. But now I pretty much believe it is REM sleep. (This night, there were a couple more in the 40 mins before final wakefulness.):

[Image: rnjMT08l.png]

If anyone has an alternate explanation, I'd love to hear.

There's also a lower respiration rate in first minutes of my session, and in the last. I see that a lot too. I believe those are periods of wakefulness. As mentioned, with no data for the OP, it's just speculation, but the drop could simply be the transition from sleep to wakefulness.

-Ron

We are such stuff
As dreams are made on, and our little life
Is rounded with a sleep.
(This post was last modified: 09-09-2016 02:07 PM by rkl122.)
09-09-2016 02:00 PM
Find all posts by this user Post Reply Quote this message in a reply
PaytonA Offline
Wiki Editor
Monitors

Posts: 3,015
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: #7
RE: Resp rate drop off before waking
(09-09-2016 02:00 PM)rkl122 Wrote:  There's also a lower respiration rate in first minutes of my session, and in the last. I see that a lot too. I believe those are periods of wakefulness. As mentioned, with no data for the OP, it's just speculation, but the drop could simply be the transition from sleep to wakefulness.

-Ron

That was my initial thought too but without actual data, I did not bring it up. We tend to breathe more rapidly and shallower during sleep, so the respiration rate dropping close to wakening would seem to me to be normal.

Best Regards,

PaytonA
09-09-2016 07:10 PM
Find all posts by this user Post Reply Quote this message in a reply

Donate to Apnea Board
sclaire Offline

New Members

Posts: 3
Joined: Jul 2016

Machine: resMed10
Mask Type: Nasal pillows
Mask Make & Model: ResMed
Humidifier: unsure
CPAP Pressure: 7
CPAP Software: SleepyHead

Other Comments:

Sex: Female
Location: Canada

Post: #8
RE: Resp rate drop off before waking
Thanks to you and the other folks who answered. Much appreciated.

C
09-11-2016 10:26 AM
Find all posts by this user Post Reply Quote this message in a reply
klv329 Offline

Preferred Members

Posts: 27
Joined: Aug 2015

Machine: Resmed s9 Adapt
Mask Type: Nasal pillows
Mask Make & Model: Resmed LT
Humidifier: 80
CPAP Pressure: 8.2, 1.4-10.0
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location: St. Petersburg, FL

Post: #9
RE: Resp rate drop off before waking
Same here. It's low in the beginning and at the end of a sleep session. I associate it with wakefulness and perhaps some call it sleep wake junk.

It also happens for short periods while asleep. These periods are when the asv works the hardest and hits high pressures to keep minute ventilation at 90%.
09-11-2016 02:49 PM
Find all posts by this user Post Reply Quote this message in a reply

Donate to Apnea Board
Post Reply 


Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  Still waking up... can someone help? mcsheltie 21 602 Yesterday 07:10 PM
Last Post: robysue
  Need help with waking up at 4am Judy1843 12 497 11-29-2016 05:36 PM
Last Post: Galactus
  [Equipment] low heart rate BrownFox292 4 244 11-24-2016 03:34 AM
Last Post: holden4th
  Leak rate abrun7 8 479 11-22-2016 09:02 PM
Last Post: Sleepster
  Flow Rate Interpretation nadprok 2 219 11-13-2016 06:08 PM
Last Post: nadprok
  Resmed AirFit P10 Acceptable Leak Rate jimchi 1 367 10-30-2016 09:30 PM
Last Post: Sleeprider
  95% Rate Has Risen Significantly holden4th 13 674 10-25-2016 04:04 AM
Last Post: holden4th

Forum Jump:

Who's Online (Complete List)