(07-27-2013, 03:34 PM)dschu17 Wrote: When looking at the box I see only 'resmed' and 'auto 25'.
In a very short documentation provided this is a device providing pressures of until 25 hPa (normal s9 CPAP only up to 20 hPa).
It seems not to be a VPAP device, but bilevel with EPR.
I should like to know how this (bilevel and EPR) work together.
I found a clinical guide for s9 VPAP devices, but it does not mention auto 25.
Hi dschu17, welcome to the forum!
I think the S9 Auto 25 is not available in North America. In North America I think the S9 VPAP Auto is a similar bi-level device, except the S9 VPAP Auto allows the convenience of a third mode (VPAP-S, which is standard bilevel without auto-adjustment of the pressure), in addition to VPAP-Auto mode and standard CPAP mode. But a person could set the S9 Auto 25 to operate like a VPAP-S device, merely by setting the S9 Auto 25 parameters in such a way that it has no range for automatic adjustments, so actually a separate mode for VPAP-S is not needed.
The S9 Auto 25 web page linked to in post #5 says:
"CPAP mode Set Pressure: 4 to 20 cm H2O"
"VAuto mode Min EPAP: 4 cm H2O; Max IPAP: 25 cm H2O; Pressure support: 0 to 10 cm H2O."
"Easy-Breathe EPR (expiratory pressure relief) adjusts pressure on exhalation for maximum comfort in both CPAP and VAuto modes."
So, with the S9 Auto 25 it sounds to me like EPR and Pressure Support can be operating at the same time when in VAuto mode. Interesting. (In the S9 VPAP Auto, EPR only applies to CPAP mode.)
You can use ResScan to look at the detailed waveform plot of the High Rate Pressure and see exactly how the EPR and Pressure Support settings affect the pressure in the S9 Auto 25. (My guess would be that changing the minimum EPAP alone would change both inhale and exhale pressures equally, changing EPR alone would only change the exhale pressure, and changing Pressure Support alone would only change the inhale pressure.)