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+--- Thread: flow limitations acceptable levels (/Thread-flow-limitations-acceptable-levels)
RE: flow limitations acceptable levels - paulag1955 - 11-30-2023
Thanks.
RE: flow limitations acceptable levels - ahuman - 03-21-2024
(11-30-2023, 01:05 PM)gainerfull Wrote: Dr. Barry Krakow recommended and worked to engineer "normal breathing"
Once AHI and flow limitations are low, can you explain the titration and adjustment process you used to improve flow rate shape?
RE: flow limitations acceptable levels - G. Szabo - 03-21-2024
(11-30-2023, 01:17 PM)gainerfull Wrote: https://www.youtube.com/watch?v=Syv7YcHbTCI&list=FLnMM5mZyd0l3xts4HCaW_Qg&index=1&t=1409s
Thank you for this link, which points to the most enlightening presentation I have seen.
RE: flow limitations acceptable levels - ahuman - 03-21-2024
Is he saying ASV is always superior to ABPAP? Is there an objective means to measure REM consolidation without an in-lab titration study? Which sleep labs do this level of study?
RE: flow limitations acceptable levels - G. Szabo - 03-21-2024
(03-21-2024, 02:17 PM)ahuman Wrote: Is he saying ASV is always superior to ABPAP?
I believe so.
RE: flow limitations acceptable levels - ahuman - 03-21-2024
Is this due to the pressure and volume of air being delivered differently and how that impacts expiratory resistance?
ASV - variable PS with varying pressure and (nearly?) constant volume, least expiratory resistance
ABPAP - fixed PS with varying pressure and volume - volume better maintain by PS, less expiratory resistance
APAP - varying pressure and volume
Not sure that understanding is correct? How does ASV maintain volumes?
RE: flow limitations acceptable levels - G. Szabo - 03-21-2024
(03-21-2024, 02:48 PM)ahuman Wrote: How does ASV maintain volumes?
ASV has proprietary software that does more than maintain volumes. But our experts might elaborate on some more details.
RE: flow limitations acceptable levels - CPAPfriend - 03-23-2024
ahuman
Resmed ASV algo aims for constant minute ventilation and Phillips ASV for constant tidal volume, I believe. Could be vice versa. Minute ventilation is respiratory rate multiplied by tidal volume, and so is a function of volume.
ABPAP is auto-bilevel. Can auto PS and pressure. ASV is breath-by-breath changes in IPAP, also capable of adjusting EPAP to eliminate events, plus backup rate.