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ResMed Airsense 10 pulses as if something hit the hose?
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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

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Sex: Male
Location: Dallas(ish)

Post: #21
RE: ResMed Airsense 10 pulses as if something hit the hose?
(03-20-2016 01:30 PM)Ed1101 Wrote:  When machine is in pause mode, there is some air flow per manual to ensure dry out of hose. There is a slight pulsing on exhaling in this mode which the DME says is normal but the hose does not "jump" or bounce. The plate only partially closes the port in the pause mode.
why do you have your mask on, and breathing when the machine is in standby mode?

(03-20-2016 01:30 PM)Ed1101 Wrote:  Notwithstanding, what the DME says the port does exhaust air on exhaling as I can feel it with my hand.
if you're talking about exhaling when the machine is off (standby) then again, why are you breathing with the mask on and the machine of?

(03-20-2016 01:30 PM)Ed1101 Wrote:  I do not know if the drop of 3cm (EPR=3) from 15cm would allow the port to partly open.
not unless the mask is defective

(03-20-2016 01:30 PM)Ed1101 Wrote:  Actually the air coming out of the port feels fairly constant to me so I do not think the valve works as the DME states. I think it reacts to air flow and closes proportionally. I do not know if there is a minimum pressure (air flow) that fully closes the the port but certainly 15cm should fully close the port. Anyone know this value for the F10 mask?

the AA valve is fully closed at *ALL* operating pressures of a cpap, which means 3cm and up. any air that you're feeling is coming from the vent holes that encircle the hole where the elbow connects.
03-20-2016 01:38 PM
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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: #22
RE: ResMed Airsense 10 pulses as if something hit the hose?
(03-20-2016 01:06 PM)justMongo Wrote:  One last thought. Make sure the machine is set (in its menu) for a FFM. If set to Pillows or? it could cause the airflow to transition to/from EPR at a rate that's noticeable.

The mask is set for FFM. My min PS=15 so EPR=3 is PS =13. The Hose "jerk" is not contineous but somewhat random on exhalation only. While awake it may not occur at all then it may occur 2 or 3 time in the 5-10 minutes until I go back to sleep. I rarely have the problem on initial sleep usually upon awakening in the night. SH show the mask pressure as close to a half sine wave that follows the pressure curve.

It does not matter how slowly you go as long as you do not stop. --Confucius
03-20-2016 01:44 PM
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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: #23
RE: ResMed Airsense 10 pulses as if something hit the hose?
(03-20-2016 01:38 PM)palerider Wrote:  why do you have your mask on, and breathing when the machine is in standby mode?

the AA valve is fully closed at *ALL* operating pressures of a cpap, which means 3cm and up. any air that you're feeling is coming from the vent holes that encircle the hole where the elbow connects.

"Standby Mode", thats the word I have needed. I just notice it when I first put the mask on in standby mode before I reach over and push the button that initiates pressure. When I fisrt noticed the pulsing I paused to see what was happening. Do you put the mask/pillow on under pressure?

Fully closed at 3cm and above was what I had been told. It seems reasonable that the valve is fully closed as the leak rate I see is ranging around 10-15 L/min and would be *MUCH* higher if the AA port was even partily open and the mask pressure follows a half sine wave around the pressure in SH. I was speaking of feeling the air escaping at the AA port when under pressure ... it seems to come from the port not only the holes around the elbow port?

It does not matter how slowly you go as long as you do not stop. --Confucius
(This post was last modified: 03-20-2016 02:05 PM by Ed1101.)
03-20-2016 02:00 PM
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justMongo Offline

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Machine: ResMed VPAP Auto (S9)
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Post: #24
RE: ResMed Airsense 10 pulses as if something hit the hose?
(03-20-2016 01:44 PM)Ed1101 Wrote:  The mask is set for FFM. My min PS=15 so EPR=3 is PS =13. My min pressure is 15, my max pressure is 30, and my EPR is 3 The Hose "jerk" is not contineous but somewhat random on exhalation only. While awake it may not occur at all then it may occur 2 or 3 time in the 5-10 minutes until I go back to sleep. I rarely have the problem on initial sleep usually upon awakening in the night. SH show the mask pressure as close to a half sine wave that follows the pressure curve.

PS is a parameter on bilevel machines such as the VPAP series.

Any chance you're overfilling the water chamber; or getting condensation in the hose. If so, a bead of water can "whap' the hose.

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.
03-20-2016 02:00 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: #25
RE: ResMed Airsense 10 pulses as if something hit the hose?
(03-20-2016 01:44 PM)Ed1101 Wrote:  The mask is set for FFM. My min PS=15 so EPR=3 is PS =13.

PS is Pressure Support, the difference in inhalation and exhalation pressure.

it's primarily applicable to bilevel machines, but EPR acts as a limited bilevel, so your PS is 3 when your EPR is 3.
03-20-2016 02:13 PM
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palerider Offline

Preferred Members-

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: #26
RE: ResMed Airsense 10 pulses as if something hit the hose?
(03-20-2016 02:00 PM)Ed1101 Wrote:  
(03-20-2016 01:38 PM)palerider Wrote:  why do you have your mask on, and breathing when the machine is in standby mode?

the AA valve is fully closed at *ALL* operating pressures of a cpap, which means 3cm and up. any air that you're feeling is coming from the vent holes that encircle the hole where the elbow connects.

"Standby Mode", thats the word I have needed. I just notice it when I first put the mask on in standby mode before I reach over and push the button that initiates pressure. When I fisrt noticed the pulsing I paused to see what was happening. Do you put the mask/pillow on under pressure?
what the anti asphyxiation port does when the machine is in standby is completely immaterial to normal operating behavior.

it's like talking about how fast your car is going when the engine is off. (or something.. someone come up with a better analogy)

(03-20-2016 02:00 PM)Ed1101 Wrote:  it seems to come from the port not only the holes around the elbow port?
how could you tell, since the air from the vents blows over where the aa port is?
03-20-2016 02:17 PM
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Ed1101 Offline

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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: #27
RE: ResMed Airsense 10 pulses as if something hit the hose?
(03-20-2016 02:00 PM)justMongo Wrote:  PS is a parameter on bilevel machines such as the VPAP series.

Any chance you're overfilling the water chamber; or getting condensation in the hose. If so, a bead of water can "whap' the hose.

Last night we had a party at our house and I did not follow my normal routine of preparing everything around 6PM. Changed routine and I forgot to fill the water chamber. "Whap" still there and I experimented with changes in EPR as noted elsewhere in this thread. Also have heated hose option, so condensation in the hose not the issue.

It does not matter how slowly you go as long as you do not stop. --Confucius
03-20-2016 02:19 PM
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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: #28
RE: ResMed Airsense 10 pulses as if something hit the hose?
PaleRider wrote:
how could you tell, since the air from the vents blows over where the aa port is?


The circular vents are about 1" from the AA port but it may not be possible to tell. Just my impression.

Standyby mode immaterial to normal operation. Got it.

It does not matter how slowly you go as long as you do not stop. --Confucius
(This post was last modified: 03-20-2016 02:29 PM by Ed1101.)
03-20-2016 02:25 PM
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eseedhouse Offline

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Machine: ResMed Airsense 10 Autoset
Mask Type: Full face mask
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Other Comments: Also on supplemental O2 at 3L/min. while sleeping.

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Location: Victoria, British Columbia

Post: #29
RE: ResMed Airsense 10 pulses as if something hit the hose?
(03-19-2016 09:09 PM)SuperSleeper Wrote:  Gettin' old ain't fun, but it's better than the alternative.

I don't know - I was dead for several billion years I don't remember how it felt

Ed Seedhouse
VA7SDH

I am neither a Doctor, nor any other kind of medical professional.

Actually you know, it is what it isn't.
03-20-2016 02:54 PM
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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: #30
RE: ResMed Airsense 10 pulses as if something hit the hose?
Thanks to all. I have learned a great deal from your replys and comments. That is what is so great about this board ... good information and no Newbie question is considered a stupid question.

It does not matter how slowly you go as long as you do not stop. --Confucius
03-20-2016 03:19 PM
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