Yawning and PF (a fun research question 😉) (ps not REAL research 😅🙈)

[EmmaF91]

Currently in hospital (3rd admission since March - can’t wait til I can start Ben!🙄😅). Waiting for my evening neb and do my PF check

350 (55%) twice, but 3rd attempt I started to yawn (though let’s use this anyway) and did the PF on the ‘out’ yawn... 400 (63%)! Did another normal and got 350 again.

I then entertained myself as I had a yawning fit... every yawn PF 400, every ‘normal’ 350 (small things I know 😂🙈)

So the question is has anyone else had this phenomenon happen? If yes how much did you improve? If no, would you be willing to try it out 😉😂?

[Wheezycat]

With yawning - can’t say I have noticed, with coughing or cough like expiration ( when bad sometimes things go a bit weird) yes.

[Lysistrata Administrator Community Ambassador]

I did it and got a much higher result when I managed to coordinate the out-yawn into the tube (is that a word?)

While most poor PF technique issues seem to focus on falsely low results, I did have a consultant tell me the way I was doing it would get a falsely high reading - he said 'I'm not interested in what your trachea can do'. At the time I was getting a ridiculously high best due to this - I still have a pretty high best well above predicted but lower than the 'tracheal' one and confident this is real (former wind player) - plus only get it with a little help from my friend salbutamol, on a good day with a following wind and no yawning

I wonder if the exhalation from a yawn has a similar effect, as I know coughing into it also messes things up.

[EmmaF91 Community Ambassador in reply to Lysistrata]

Yeah that was my thought too! I can actually feel trachea opening more when I yawn and the air was very fast past that point... I also got told off for doing PF post cough in clinic once for this very reason 😉 😅