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ResMed Airsense 10 pulses as if something hit the hose?
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Ed1101 Offline

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Posts: 76
Joined: Feb 2016

Machine: Resmed AirSence 10 Autoset
Mask Type: Full face mask
Mask Make & Model: ResMed Aifit F10
Humidifier: Integral
CPAP Pressure: 15-20
CPAP Software: ResScan SleepyHead

Other Comments: Began APAP 8 Feb 2016. Titration Study AHI=29 PreCPAP AHI= 86

Sex: Male
Location: Richardson TX

Post: #1
ResMed Airsense 10 pulses as if something hit the hose?
My Resmed Airsence 10 has an problem that my DME and ResMed Rep say they have not seen before. I am using the F10 FFM.

Symptom: When the machine is on but inactive without pressure but with residual airflow with mask on and attached to the hose there is a slight pulsing sensation on exhaling. The DME says that is normal and that is OK with me.

The Problem: However, during the night with mask at 15+cm pressure the "pulsing" becomes pronounced enought to wake me up. It is not continuous but occurs several times per minute in a random manner. While awake I observe the problem only when exhaling and still random. It feels like something "slapped" the hose (no I do not have a cat as the ResMed rep asked Smile ). The effect is similiar to the inactive symptom described above but about 10 time more intense. if I put the machine in inactive mode and restart the problem seems to go away only to return sometime later and awaken me again. ( A new machines does this also)

The EPR is set to 3 full time. Works well for me but I suspect that this maybe the root of the problem. I plan to try EPR 2, 1 and off, but thought I would poll the forum to see if anyone has a had similar experience and hopefully knows a solution.

It does not matter how slowly you go as long as you do not stop. --Confucius
03-19-2016 01:29 PM
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FrankNichols Offline

Advisory Members

Posts: 714
Joined: Mar 2016

Machine: AirSense 10 Autoset
Mask Type: Full face mask
Mask Make & Model: Resmed F10 and/or P10
Humidifier: Builtin
CPAP Pressure: 17-19
CPAP Software: ResScan SleepyHead Other Software

Other Comments: I've figured out how to get my AHI down to 5, I quit sleeping!

Sex: Male
Location: Live Oak, Florida

Post: #2
RE: ResMed Airsense 10 pulses as if something hit the hose?
I am new to CPAP and probably wrong, but I seem to recall reading something about ASV pulsing to detect/correct(?) Centrals? I don't think the Airsence 10 has ASV though so it probably isn't that - could it be related?
03-19-2016 01:56 PM
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justMongo Offline

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Posts: 3,852
Joined: Sep 2013

Machine: ResMed VPAP Auto (S9)
Mask Type: Full face mask
Mask Make & Model: ResMed Mirage Quattro
Humidifier: ResMed H5i
CPAP Pressure: 18 IPAPmax - 11 EPAPmin, PS=5
CPAP Software: Other Software

Other Comments: μολὼν λαβέ

Sex: Male
Location: Калифорния

Post: #3
RE: ResMed Airsense 10 pulses as if something hit the hose?
He's specific that it's an Autoset; which is not an ASV.
Here's a thought: Perhaps the anti-asphyxia valve in the FFM is defective?

Or, your unit has a defective motor controller.

INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
03-19-2016 02:02 PM
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Ed1101 Offline

Preferred Members

Posts: 76
Joined: Feb 2016

Machine: Resmed AirSence 10 Autoset
Mask Type: Full face mask
Mask Make & Model: ResMed Aifit F10
Humidifier: Integral
CPAP Pressure: 15-20
CPAP Software: ResScan SleepyHead

Other Comments: Began APAP 8 Feb 2016. Titration Study AHI=29 PreCPAP AHI= 86

Sex: Male
Location: Richardson TX

Post: #4
RE: ResMed Airsense 10 pulses as if something hit the hose?
(03-19-2016 01:56 PM)FrankNichols Wrote:  I am new to CPAP and probably wrong, but I seem to recall reading something about ASV pulsing to detect/correct(?) Centrals? I don't think the Airsence 10 has ASV though so it probably isn't that - could it be related?

(03-19-2016 02:02 PM)justMongo Wrote:  He's specific that it's an Autoset; which is not an ASV.
Here's a thought: Perhaps the anti-asphyxia valve in the FFM is defective?

Or, your unit has a defective motor controller.

Yes it is autoset, but the EPR reduces the pressure on exhaling ( I was told 3cm per setting 3 = 9cm?). The DME replaced the initial A10, but the problem remains. I aslo suspect the Anti-asphyxia valve is defective. If it is the valve it may be related to the pressure reduction of EPR allowing the valve to malfunction. If the EPR reductions do not fix then I am due a new mask in early April that will have a new elbow and valve. DME discounts the valve as the problem. ResMed Rep seemed stumped and never heard of this problem

The Ai10 uses low level puses to detect Centrals vs OA, but the problem occurs when I am wide awake (haven't checked Sleepyhead if Centrals are occuring when I know I am awake). I have introduced a "snore" as a marker so I can be sure when the problem is occuring while I am awake. Will check SH to see what it reveals for the new replacement A10. Prior A10 did not show any mask pressure spikes that I could locate only the normal half sine variation associated with the EPR level.Dont-know

I do not know how the A10 "knows" I am exhaling. Could be some irregular breathing cause the SW to be fooled? Maybe I should see if I can fool the SW and make it generate the "pulse".

Any suggesions welcome.

It does not matter how slowly you go as long as you do not stop. --Confucius
(This post was last modified: 03-19-2016 03:53 PM by Ed1101.)
03-19-2016 03:50 PM
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justMongo Offline

Monitors

Posts: 3,852
Joined: Sep 2013

Machine: ResMed VPAP Auto (S9)
Mask Type: Full face mask
Mask Make & Model: ResMed Mirage Quattro
Humidifier: ResMed H5i
CPAP Pressure: 18 IPAPmax - 11 EPAPmin, PS=5
CPAP Software: Other Software

Other Comments: μολὼν λαβέ

Sex: Male
Location: Калифорния

Post: #5
RE: ResMed Airsense 10 pulses as if something hit the hose?
(03-19-2016 03:50 PM)Ed1101 Wrote:  Yes it is autoset, but the EPR reduces the pressure on exhaling ( I was told 3cm per setting 3 = 9cm?). Nein. 1 cm per setting for up to 3 cm total.

The DME replaced the initial A10, but the problem remains. I aslo suspect the Anti-asphyxia valve is defective. If it is the valve it may be related to the pressure reduction of EPR allowing the valve to malfunction. If the EPR reductions do not fix then I am due a new mask in early April that will have a new elbow and valve. DME discounts the valve as the problem. ResMed Rep seemed stumped and never heard of this problem

The Ai10 uses low level pulses to detect Centrals vs OA, That is a 4 Hertz, 1cm amplitude, near sine wave; you'll not feel it. but the problem occurs when I am wide awake (haven't checked Sleepyhead if Centrals are occuring when I know I am awake). I have introduced a "snore" as a marker so I can be sure when the problem is occuring while I am awake. Will check SH to see what it reveals for the new replacement A10. Prior A10 did not show any mask pressure spikes that I could locate only the normal half sine variation associated with the EPR level.Dont-know

I do not know how the A10 "knows" I am exhaling. It's running a moving average on flow; and uses that average to set a zero crossing threshold. Could be some irregular breathing cause the SW to be fooled? Maybe I should see if I can fool the SW and make it generate the "pulse".

Any suggesions welcome.

INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
03-19-2016 04:16 PM
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OpalRose Offline

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Posts: 3,180
Joined: Nov 2014

Machine: PR System One REMstar Auto 560 with A Flex
Mask Type: Nasal pillows
Mask Make & Model: AirFit P10 For Her
Humidifier: REMStar heated humidifier with heated hose
CPAP Pressure: Auto Cpap 10-13 AFLEX 1
CPAP Software: SleepyHead EncoreBasic

Other Comments: Started CPAP Therapy October 23, 2014

Sex: Female
Location: Northeast Ohio, USA

Post: #6
RE: ResMed Airsense 10 pulses as if something hit the hose?
The Resmeds EPR setting of 3 = 3cm reduction upon exhalation. EPR OF 2= 2cm reduction and EPR OF 1 = 1cm reduction.

The "pulse" is sent to determine if the airway has collapsed.

If the machine determines the airway is open and detects no breathing, the apnea is a Clear Airway or Central, and the APAP will not increase pressure. Increasing pressure will not treat Clear Airways.

If the pulse determines that the airway is partially closed, then it will start to raise pressure to help keep airway open.

OpalRose
03-19-2016 04:27 PM
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palerider Offline

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Posts: 440
Joined: Nov 2014

Machine: s9 vpap auto
Mask Type: Nasal pillows
Mask Make & Model: p10
Humidifier: none
CPAP Pressure: 18/13+
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location: Dallas(ish)

Post: #7
RE: ResMed Airsense 10 pulses as if something hit the hose?
(03-19-2016 01:56 PM)FrankNichols Wrote:  I am new to CPAP and probably wrong, but I seem to recall reading something about ASV pulsing to detect/correct(?) Centrals? I don't think the Airsence 10 has ASV though so it probably isn't that - could it be related?

resmed asv's don't attempt to detect centrals. instead, they treat them.
03-19-2016 04:48 PM
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ehunter Offline

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Posts: 20
Joined: Mar 2016

Machine: AIrsense 10 Autoset
Mask Type: Nasal pillows
Mask Make & Model: AirFit P10
Humidifier: Built in
CPAP Pressure: 7-15
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location:

Post: #8
RE: ResMed Airsense 10 pulses as if something hit the hose?
Hi I have similar but less invasive issue. I use P10 pillows but have noted that when going to sleep on exhale sometimes, and this might be only 2 or 3 times a night, the hose does need jerk or bounce similar to how you describe. Ive mentioned this to me sleep consultant but with no response. Doesn't bother me as get to sleep ok but agree I have had similar symptoms to you. Sorry I can't solve!
03-19-2016 07:25 PM
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FrankNichols Offline

Advisory Members

Posts: 714
Joined: Mar 2016

Machine: AirSense 10 Autoset
Mask Type: Full face mask
Mask Make & Model: Resmed F10 and/or P10
Humidifier: Builtin
CPAP Pressure: 17-19
CPAP Software: ResScan SleepyHead Other Software

Other Comments: I've figured out how to get my AHI down to 5, I quit sleeping!

Sex: Male
Location: Live Oak, Florida

Post: #9
RE: ResMed Airsense 10 pulses as if something hit the hose?
It seems the only thing I got right in my post was that I was probably wrong Smile
03-19-2016 08:41 PM
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SuperSleeper Offline

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Posts: 9,972
Joined: Feb 2012

Machine: PR System One REMstar Auto (DS560)
Mask Type: Nasal pillows
Mask Make & Model: ResMed Mirage Swift II
Humidifier: none
CPAP Pressure: 12.5 - 18.5 cmH20 (auto range)
CPAP Software: SleepyHead

Other Comments: Have diabetes Type II

Sex: Male
Location: Illinois, USA

Post: #10
RE: ResMed Airsense 10 pulses as if something hit the hose?
(03-19-2016 08:41 PM)FrankNichols Wrote:  It seems the only thing I got right in my post was that I was probably wrong Smile

Welcome to my world. Coffee Bigwink

Gettin' old ain't fun, but it's better than the alternative.

SuperSleeper
Apnea Board Administrator
www.ApneaBoard.com


INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.

03-19-2016 09:09 PM
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