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Help with Respironics PR System One REMstar Auto with A-flex
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archangle Offline
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Posts: 3,159
Joined: Feb 2012

Machine: ResMed S9 AutoSet
Mask Type: Nasal pillows
Mask Make & Model: ResMed Swift FX
Humidifier: ResMed S9 H5i
CPAP Pressure: 16-20
CPAP Software: ResScan SleepyHead EncoreBasic

Other Comments: Happy PAPper

Sex: Undisclosed
Location: USA

Post: #11
RE: Help with Respironics PR System One REMstar Auto with A-flex
The original poster hasn't logged in in the past year and a half.

Even on manual CPAP with no EPR, and no apnea to generate "central detetion" pressure pulses, the PRS1 does seem to sort of "pulse" on inhale and exhale. I notice it with a nasal mask as it sort of pumps up and down as I breathe.

I presume it's something to do with the machine adjusting the fan speed up and down trying to keep mask pressure constant as I inhale and exhale.

My S9 machine doesn't seem to do this to the same extend. I know ResMed claims the S9 motor responds more quickly and accurately to regulate pressure. The S9 just feels a lot smoother to me.

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06-24-2014 07:36 AM
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Sleepster Offline
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Posts: 4,991
Joined: Feb 2012

Machine: ResMed AirCurve10 VAuto
Mask Type: Full face mask
Mask Make & Model: F&P Simplus
Humidifier: HumidAir and SlimLine Hose
CPAP Pressure: MaxI 13.6 | MinE 5.2 | PS 4.4
CPAP Software: ResScan SleepyHead

Other Comments: Diagnosed Nov 2011. Conquered aerophagia.

Sex: Male
Location: Houston, Texas

Post: #12
RE: Help with Respironics PR System One REMstar Auto with A-flex
(06-24-2014 07:36 AM)archangle Wrote:  I presume it's something to do with the machine adjusting the fan speed up and down trying to keep mask pressure constant as I inhale and exhale.

I noticed this, too, the other day when I tried a FFM for the first time. I think that once you relax it goes away to some extent. It has to do with how quickly we go from not inhaling to inhaling. In other words, it's the acceleration of the air stream.

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06-26-2014 11:17 AM
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PaytonA Offline
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Posts: 3,005
Joined: Dec 2013

Machine: ResMed S9 VPAP Auto
Mask Type: Full face mask
Mask Make & Model: Resmed Mirage Quattro
Humidifier: H5i(distilled-top up)
CPAP Pressure: VAuto MinE14.0 MaxI 20.6 PS4.0
CPAP Software: ResScan SleepyHead

Other Comments:

Sex: Male
Location: Orange County,California

Post: #13
RE: Help with Respironics PR System One REMstar Auto with A-flex
(06-24-2014 07:36 AM)archangle Wrote:  The original poster hasn't logged in in the past year and a half.

Even on manual CPAP with no EPR, and no apnea to generate "central detetion" pressure pulses, the PRS1 does seem to sort of "pulse" on inhale and exhale. I notice it with a nasal mask as it sort of pumps up and down as I breathe.

I presume it's something to do with the machine adjusting the fan speed up and down trying to keep mask pressure constant as I inhale and exhale.

My S9 machine doesn't seem to do this to the same extend. I know ResMed claims the S9 motor responds more quickly and accurately to regulate pressure. The S9 just feels a lot smoother to me.

My S8 VPAP at times give me harsh pulses apparently from EPAP to IPAP and back. They are definitely not any "central detection". The rest of the time it is smooth as silk. Trying to figure out some workaround. Would be a lot easier if it did it all the time. I have noticed that if I shut the machine off and restart it the problem goes away.

On another note, when I set my VPAP Auto to CPAP mode at 20 cm/H2O to do a mask fit, my mask definitely jumps up and down as I breathe. It is due to the fact that the mask pressure increases dramatically on exhale, especially at the beginning of exhale and there is no intentional pressure reduction by the machine for EPR. EPR or bi-level makes that a lot smoother and the mask does not get so jumpy or maybe it is pushups so the mask can keep itself in shape. Nest thing I know the darned thing will want a diet. Too-funny

Best Regards,

PaytonA
(This post was last modified: 06-26-2014 11:36 AM by PaytonA.)
06-26-2014 11:27 AM
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diamaunt Offline

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Posts: 436
Joined: May 2012

Machine: S9 VPAP Auto 36006
Mask Type: Full face mask
Mask Make & Model: mirage quattro/pilairo q
Humidifier: none
CPAP Pressure: 9-20ish
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location: texas

Post: #14
RE: Help with Respironics PR System One REMstar Auto with A-flex
(06-26-2014 11:27 AM)PaytonA Wrote:  My S8 VPAP at times give me harsh pulses apparently from EPAP to IPAP and back. They are definitely not any "central detection".

I'm pretty sure the whole central detection thing started with the prs1 and the s9 units.
06-26-2014 03:35 PM
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