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[Pressure] Time to change pressure setting?
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wishicansleep Offline

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Posts: 39
Joined: Sep 2015

Machine: Respironics System 1
Mask Type: Nasal pillows
Mask Make & Model: philips respironics Nuance Pro Pillows
Humidifier: Respironics
CPAP Pressure: 7
CPAP Software: SleepyHead

Other Comments: Begin CPAP 1 Sep 2015

Sex: Male
Location: Sydney

Post: #1
Time to change pressure setting?
One month after Respironics System One, a typical night Pressure graph is shown. My Rx is 7.0 but this shows a saw tooth almost every night. (APAP 7-10). Is it time to increase the lower pressure?
12-23-2015 04:02 PM
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OpalRose Offline

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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

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Location: Northeast Ohio, USA

Post: #2
RE: Time to change pressure setting?
The answer to your question depends on your AHI and breakdown of, like obstructions, hypopneas, clear airways, flow limitations, RERA's, and of course how you feel.

You will see that "saw tooth" regardless of pressure. The PR machines do this thing called "hunt and peck" during the night. If you look closely, you will see that it raises the pressure by 1.5cm every so often and drops back to start pressure...hence looking like a sawtooth. It does this to check for events.

What you should post here in addition to the pressure graph is the event graph, flow rate graph, and leak rate graph. Also include the detailed info to the left of graphs.

OpalRose
(This post was last modified: 12-23-2015 04:49 PM by OpalRose.)
12-23-2015 04:48 PM
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vsheline Online

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Posts: 1,911
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Machine: S9 VPAP Adapt (USA Model# 36007, not better 36037 or 36067)
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Post: #3
RE: Time to change pressure setting?
(12-23-2015 04:02 PM)wishicansleep Wrote:  Is it time to increase the lower pressure?

Your pressure graph looks normal, but a good reason to raise the Min Pressure setting would be if 7 cm H2O is uncomfortably low.

Membership in the Advisory Member group should not be understood as in any way implying medical expertise or qualification for advising Sleep Apnea patients concerning their treatment. The Advisory Member group provides advice and suggestions to Apnea Board administrators and staff on matters concerning Apnea Board operation and administrative policies - not on matters concerning treatment for Sleep Apnea. I think it is now too late to change the name of the group but I think Voting Member group would perhaps have been a more descriptive name for the group.
12-24-2015 05:03 PM
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wishicansleep Offline

Preferred Members

Posts: 39
Joined: Sep 2015

Machine: Respironics System 1
Mask Type: Nasal pillows
Mask Make & Model: philips respironics Nuance Pro Pillows
Humidifier: Respironics
CPAP Pressure: 7
CPAP Software: SleepyHead

Other Comments: Begin CPAP 1 Sep 2015

Sex: Male
Location: Sydney

Post: #4
RE: Time to change pressure setting?
(12-23-2015 04:48 PM)OpalRose Wrote:  The answer to your question depends on your AHI and breakdown of, like obstructions, hypopneas, clear airways, flow limitations, RERA's, and of course how you feel.

You will see that "saw tooth" regardless of pressure. The PR machines do this thing called "hunt and peck" during the night. If you look closely, you will see that it raises the pressure by 1.5cm every so often and drops back to start pressure...hence looking like a sawtooth. It does this to check for events.

What you should post here in addition to the pressure graph is the event graph, flow rate graph, and leak rate graph. Also include the detailed info to the left of graphs.

Dear Opal Rose - thanks for your reply. Here are the additional graphs. AHI is very low compared to others, but still feel tired.
12-28-2015 07:29 PM
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OpalRose Offline

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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: #5
RE: Time to change pressure setting?
Your graphs look ok, a high leak issue around 3:00. Was looking for your medium and 90% pressure numbers. If you check your 90% pressure, (this means you were at that pressure for 90% of the night and under, then your starting pressure should start 1 or 2cm below the 90% number.

You probably are starting at the right pressure, but could be raised to 7.5 or 8. If you do this, then start your ramp higher, around 6. You can also use a flex setting, try at 2, this will help with exhale relief.

You just may be sensitive to pressure changes, and may be waking you up, but you haven't been on Cpap for very long, so give it some time. Smile

OpalRose
12-28-2015 08:15 PM
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