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u/RepublicGlass6557

r/UARS r/UARSnew
Image 1 — How do you fix right skewed flow limitation that partially collapses mid inspiration?
Image 2 — How do you fix right skewed flow limitation that partially collapses mid inspiration?
Image 3 — How do you fix right skewed flow limitation that partially collapses mid inspiration?
Image 4 — How do you fix right skewed flow limitation that partially collapses mid inspiration?
Image 5 — How do you fix right skewed flow limitation that partially collapses mid inspiration?
Image 6 — How do you fix right skewed flow limitation that partially collapses mid inspiration?
Image 7 — How do you fix right skewed flow limitation that partially collapses mid inspiration?
Image 8 — How do you fix right skewed flow limitation that partially collapses mid inspiration?
Image 9 — How do you fix right skewed flow limitation that partially collapses mid inspiration?
▲ 5 r/UARS+1 crossposts

How do you fix right skewed flow limitation that partially collapses mid inspiration?

Hi everyone,

I'm trying to improve my flow limitation, but I'm not sure which setting I should be adjusting.

My inspiratory flow curve is consistently right-skewed, and during many breaths it seems to partially collapse around the middle of inspiration before recovering. It doesn't look like a smooth, rounded inspiratory curve.

I'm using:

  • Machine: ResMed AirCurve 10 Auto (BiPAP)
  • Mask: Full face mask
  • IPAP: 12.0 cmH₂O
  • EPAP: 6.8 cmH₂O
  • Pressure Support (PS): 5.2 cmH₂O

At the moment, I've been increasing PS by 0.2 every 3–4 days because if I increase it more quickly, I get significant aerophagia.

My question is:

  • Should I continue increasing PS to try to eliminate this type of flow limitation?
  • Or is this the kind of flow limitation that responds better to increasing EPAP instead?
  • Has anyone had a similar right-skewed inspiratory flow shape with a collapse in the middle of inspiration, and what ended up fixing it?

I'd really appreciate hearing from anyone who has dealt with this specific waveform pattern. Thanks!

u/RepublicGlass6557 — 6 days ago