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

What are these breathing patterns?
#1
Machine is AirCurve 10 VAuto, min EPAP=9, max IPAP=14 PS=5 (VPAPauto mode but fixed). 

I see these pattenrs 5-10 times per hour and wonder what do they mean.


[Image: iz5OW55.jpg]

[Image: HBQDT5m.jpg]
Post Reply Post Reply



Donate to Apnea Board  
#2
Ever inhale sharply through the nose, then swallow, and resume breathing with an exhale? Are you aware of any post-nasal drip? That's what the first one looks like.

The second one looks like a possible arousal with flow limitation at 03:38:45. All of this is perfectly normal, and no reason you should be aware of it.
Post Reply Post Reply
#3
Thanks, this makes sense. I do have post nasal drip. It's not very annoying but maybe it's time to do something about it.

With PS=5 the flow limitation is zero most of the time which is why I had not included it in the graphs.
With lower PS/EPR or straight CPAP it is significantly higher. My flow limitation is very responsive to PS/EPR.

Anyhow, should I try to minimize the 2nd one, possible arousals?
Post Reply Post Reply
#4
Now that you mention it, I do see the bilevel PS. Maybe you should update your profile with your Aircurve 10 S or Vauto machine and more accurate pressure settings. Nasal "prongs" almost don't exist. You are using nasal pillows, and should have that in your machine settings. As far as changing anything, nothing I see see here gives me a clue what to suggest.

Nasal prongs:

[Image: K2A234_600.jpg]

Nasal pillows:

[Image: airfit-p10-cpap-mask-resmed.jpg]
Post Reply Post Reply
#5
Thanks I have updated the profile. 

With same settings 14/9 and mouth taped (zero leak), what do you think happens on these expirations? the windpipe closes and opens?

[Image: 8BL5dDv.jpg]
Post Reply Post Reply



Donate to Apnea Board  
#6
There is a brief pause in the exhale that could be a swallow or just a momentary hitch in expiration. You might want to right click on the Y-Axis of the chart (left margin) and add dotted lines at zero. It makes interpretation easier as everything below the zero-line is expiration and everything above is inspiration.
Post Reply Post Reply
#7
With dotted line at zero, with more context and high zoom.
I am interested to know if this may indicate higher EPAP is required.

[Image: nHW6wyI.jpg]

[Image: KeZQca0.jpg]
Post Reply Post Reply
#8
On this reference I found how swallow looks on the airflow (marked black solid bar). This is for infants but probably similar to adults.


[Image: F2.large.jpg]
Post Reply Post Reply
#9
The graph in post #8 is a swallow following or during inspiration. The flow drops to zero and the esophageal pressure is increased during the swallow, and the chest and abdomen is relaxing (no respiratory effort). In post #7, the flow rate abruptly and briefly drops to zero during expiration, and the exhale continues after the interruption. There is no additional information to help determine if this "hitch' is a swallow or has another cause. It appears to be inconsequential. I don't think this pattern would be affected by EPAP pressure, higher or lower, but it's easy to find out since you have a bilevel.

How frequently does it occur?
If you experimented with EPAP pressure, does this event appear often enough you could discern a change?
Post Reply Post Reply



Donate to Apnea Board  
#10
This pattern happens few times a night for about ten breaths each time, so practically it's not a problem.
I had seen it happen with EPAP=7,8,9,10,11, does not appear EPAP is a factor.
Maybe a swallow but I do wonder about the abruptness ceasing of the flow.

1 Example with 14/10:

[Image: EC9r6lQ.jpg]

2 With 14/11, appears to end with arousal breaths:

[Image: 1YL9uBJ.jpg]

3 Another one with 14/11:

[Image: 1Yq2xxA.jpg]
Post Reply Post Reply


Possibly Related Threads...
Thread Author Replies Views Last Post
  High flow rate? - another unwell feeling, O2 dropping and quit breathing MyronH 18 265 6 hours ago
Last Post: MyronH
  Is my breathing pattern normal? retlif 12 420 Yesterday, 08:40 PM
Last Post: Sleeprider
  Is this mouth breathing? djont57 11 318 06-13-2018, 05:06 PM
Last Post: djont57
  Periodic Breathing Haynbo 4 254 05-29-2018, 09:10 PM
Last Post: Sleeprider
  Waking up not breathing SierraMadreMe 11 465 05-11-2018, 11:33 AM
Last Post: SarcasticDave94
  effect of mouth breathing geoffleach 1 244 04-24-2018, 06:40 AM
Last Post: Walla Walla
  Resmed 10 "Clear Airway" events (mouth breathing?) finsko 13 836 04-06-2018, 11:06 AM
Last Post: Sleep2Snore

Forum Jump:

New Posts   Today's Posts




About Apnea Board

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