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Machine: resmed air curve asv 10 Mask Type: Nasal pillows Mask Make & Model: air fit p 30i Humidifier: unsure CPAP Pressure: 6-9 epap ps 0-5 CPAP Software: OSCAR
myAir
For past month I have moved from mouth taping back to chin strap and my leaks have been reasonable. I am noticing from my graphs that I have high flow limits, pressures keep fluctuating too much and respiratory rates are all over the place. What can I do to manage that despite low AHI?
With ASV therapy, we ignore the flow limits. When an individual does not spontaneously trigger a breath, the ASV increases pressure support to cause a breath. This machine triggered breath can often appear flow-limited with a flat inspiratory peak due to a lack of inspiratory effort by the user. The longer duration FL at 01:15 may be positional and appears to be the result of real airway resistance with increased respiratory effort. Note that pressure support was not greatly assisting this "event" until the flow limit dropped and PS increased in response to a drop in respiratory rate. Best explanation is that the drop in resp rate is in response to preceding hyperventilation.
Pressure support fluctuates based on the adaptive algorithm to maintain the breathing rate and volume. The increases in PS occur where your respiration rate or minute vent has dropped below the 90-second running average. You are using ASV rather than ASV auto, and your PS is 1.2 to 8.0. I think you should consider a higher PS min of 2.0.
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