Hello Guest, Welcome to Apnea Board !
As a guest, you are limited to certain areas of the board and there are some features you can't use.
To post a message, you must create a free account using a valid email address.

or Create an Account


New Posts   Today's Posts

Deep Breath Prior to Central Apnea
#1
I've noticed in my flow rates a pattern that I'm seeing over and over again. I'll be breathing normally then suddenly I'll have a deep inhalation, deep exhalation then one normal breath then a central apnea. Curious is anyone has any understanding of what's going on here Just curious.

Flow attached.


Attached Files Thumbnail(s)
   
Post Reply Post Reply



Donate to Apnea Board  
#2
It's most probably you waking up and then rolling over or changing your position in bed. The big breath before is your arousal and the central is irregular awake breathing which we often do have very erratic breathing while awake and if you pay close attention next time you do roll over in bed most people actually tend to hold their breath while repositioning.

I have a question for you tho......you have F&P Icon listed in your equipment profile but your flow rate chart seems to be from a different machine, eh? Icon won't differentiate between obstructive and central, that looks more like a ResMed machine with the FOT flow.......which machine produced the flow chart you posted......I am just curious.
Post Reply Post Reply
#3
My trial device was an F&P. Got an S9 Auto when I purchased and hadn't updated my profile. Profile is correct now. I'll make a note of the time on the clock the next time I consciously roll over and see if that corresponds to the flow chart.

Thanks for the info.

(04-06-2015, 06:39 PM)under pressure Wrote: It's most probably you waking up and then rolling over or changing your position in bed. The big breath before is your arousal and the central is irregular awake breathing which we often do have very erratic breathing while awake and if you pay close attention next time you do roll over in bed most people actually tend to hold their breath while repositioning.

I have a question for you tho......you have F&P Icon listed in your equipment profile but your flow rate chart seems to be from a different machine, eh? Icon won't differentiate between obstructive and central, that looks more like a ResMed machine with the FOT flow.......which machine produced the flow chart you posted......I am just curious.

Post Reply Post Reply
#4
The xPAP seems to have a difficult time telling the difference between holding one's breath and a CA event, probably because all it monitors is the pressure feedback of respiration. If you stop breathing because you are holding your breath as you change position (most do this because if you don't hold your breath moving around knocks the wind in and out of you) it simply thinks your CNS is not telling you to breath, rather than you made a conscious decision not to breathe. If you stop holding your breath yet pause before resuming breathing (also normal) the FOT pulse coming during that time indicates the airway is open. The xPAP uses those two simple raw pieces of information to jump to a conclusion and flag a CA, and in this case, it's always incorrect.

I have trained myself to continue to breathe and change positions carefully if I am awake with the mask on, to avoid such false positives.

Another thing is deep breaths. A deep breath is common, sometimes referred to medically as a "sigh". Hypops are flagged by a breath that is shallow compared to the ~5 breaths surrounding it (algorithms vary). If one of those breaths is a purposefully deep breath, this skews the comparison and the xPAP can then incorrectly flag a hypop that does not, in actual reality, meet the threshold.

xPAP is smart. Just not omniscient.
Post Reply Post Reply
#5
(04-06-2015, 07:58 PM)sanger Wrote: My trial device was an F&P. Got an S9 Auto when I purchased and hadn't updated my profile. Profile is correct now. I'll make a note of the time on the clock the next time I consciously roll over and see if that corresponds to the flow chart.

Thanks for the info.

OK, you had me scratching my head for a moment.....I know the Icon can't flag a central because they don't have that technology on board, so I was thinking for a minute that maybe they came out with a new Icon that had an FOT type function.

Nice to know my ResMed guess was correct Smile

You're keeping me on my toes ! Smile
Post Reply Post Reply



Donate to Apnea Board  


Possibly Related Threads...
Thread Author Replies Views Last Post
  How to overcome if you breath with mouth and nose same time when wear mask luckydxx 137 2,307 22 minutes ago
Last Post: Ron AKA
  central sleep apnea increase Chieffy123 6 150 Yesterday, 06:08 PM
Last Post: Chieffy123
  ResMed AirCurve 10 VAuto vs ASV to Treat Central Apnea Ron AKA 17 379 04-20-2018, 12:12 AM
Last Post: Reznik
  Leaks with Nasal Pillows causing Central Events J Duffy 14 274 04-19-2018, 04:53 PM
Last Post: Marillion
  Central while on ASV Boodmaster 10 341 04-16-2018, 03:07 PM
Last Post: Hojo
  What Resmed Machine for BPAP with Many Central Apnea events? bcorlando 9 294 04-03-2018, 12:44 PM
Last Post: dmeRT
  New Guy, Central Sleep Apnea, wrong machine? Boodmaster 83 3,895 03-31-2018, 01:15 PM
Last Post: Boodmaster

Forum Jump:

New Posts   Today's Posts




About Apnea Board

Apnea Board is an educational web site designed to empower Sleep Apnea patients.