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Sudden rise in AHI
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jeffreyclay Offline

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Posts: 5
Joined: Apr 2015

Machine: Resmed S9 "CPAP Auto"
Mask Type: Nasal mask
Mask Make & Model: Mirage
Humidifier: H5
CPAP Pressure: 13-16
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location: Central Virginia

Post: #1
Sad Sudden rise in AHI
I'm new to this board, hope I don't step on any toes or break any rules.
I've noticed that I'm having trouble staying awake for a few weeks. I learned of Sleephead and took a look at the data recorded by my Bi-pap. Sure enough, a clear sign that something started on June 12th. Take a look at the attachment.
I've given a careful inspection of the hose and face mask. No defects or damage there. What would you suspect next? I'm a little baffled. Jeff
   
07-13-2015 01:33 PM
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TyroneShoes Offline

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Posts: 505
Joined: Oct 2014

Machine: Resmed S9 Autoset
Mask Type: Nasal pillows
Mask Make & Model: AirFit P10
Humidifier: Resmed H5i
CPAP Pressure: 10-14
CPAP Software: SleepyHead

Other Comments:

Sex: Undisclosed
Location:

Post: #2
RE: Sudden rise in AHI
Email that to your sleep doc. Look at the other data more closely (email that also); the data posted only tells us that AHI went up.
07-13-2015 01:53 PM
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kaiasgram Offline

Advisory Members

Posts: 242
Joined: Aug 2013

Machine: S9 VPAP Auto
Mask Type: Nasal pillows
Mask Make & Model: Aloha
Humidifier: H5i
CPAP Pressure: 8-10
CPAP Software: SleepyHead

Other Comments:

Sex: Female
Location: Northern California

Post: #3
RE: Sudden rise in AHI
The posted data also tell us that the higher AHI is due to an increase in central (aka "clear airway") apneas (the purple).

It's a little hard to read the small print in your screenshot but it looks like you've been using your machine since April -- correct?

Your total AHI still looks to be at or under 5.0 most of the time. Any other changes around the time the AHI changed -- like a change in medication or dose?
(This post was last modified: 07-13-2015 02:23 PM by kaiasgram.)
07-13-2015 02:19 PM
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jeffreyclay Offline

Members

Posts: 5
Joined: Apr 2015

Machine: Resmed S9 "CPAP Auto"
Mask Type: Nasal mask
Mask Make & Model: Mirage
Humidifier: H5
CPAP Pressure: 13-16
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location: Central Virginia

Post: #4
RE: Sudden rise in AHI
(07-13-2015 02:19 PM)kaiasgram Wrote:  The posted data also tell us that the higher AHI is due to an increase in central (aka "clear airway") apneas (the purple).

It's a little hard to read the small print in your screenshot but it looks like you've been using your machine since April -- correct?

Your total AHI still looks to be at or under 5.0 most of the time. Any other changes around the time the AHI changed -- like a change in medication or dose?

Smile This machine was replaced in April under warranty, hence the short data time. I was under the impression that the Total AHI was the entire column for the given day. If so the nights prior to June 12th the AHI was .5-1.7 and after that date were 1.3-5.5, and have remained there. I've written a letter to my Family Dr. for a referral to a sleep clinic. I can zip the files up and email them for their analysis. Thanks for replying.    
07-13-2015 03:36 PM
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Sleeprider Online
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Posts: 3,371
Joined: Dec 2014

Machine: Resmed Aircurve 10 Vauto
Mask Type: Nasal pillows
Mask Make & Model: Resmed Airfit P10
Humidifier: Resmed Climateline
CPAP Pressure: Auto Bilevel 18/9, PS 3
CPAP Software: ResScan SleepyHead EncoreBasic

Other Comments:

Sex: Male
Location: Where they make Respironics

Post: #5
RE: Sudden rise in AHI
Jeffery, Kaiasgram is absolutely right. The only change is clear apneas being recorded. At this rate, the CA is probably not something to be alarmed about, but it would be nice to find an explanation. Why was your previous machine replaced? Are both machines set up the same?

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07-13-2015 03:44 PM
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PaytonA Offline
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Monitors

Posts: 3,013
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: #6
RE: Sudden rise in AHI
Did any of your other data make a significant change at the same time - especially leaks. I will echo Sleeprider. Why was your other machine replaced? What was its problem?
07-13-2015 04:56 PM
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jeffreyclay Offline

Members

Posts: 5
Joined: Apr 2015

Machine: Resmed S9 "CPAP Auto"
Mask Type: Nasal mask
Mask Make & Model: Mirage
Humidifier: H5
CPAP Pressure: 13-16
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location: Central Virginia

Post: #7
RE: Sudden rise in AHI
It was the same machine (Resmed S9) I asked for the prior unit to be checked. I would awake at night and the positive airflow was so strong I couldn't breath with it. They found nothing wrong but couldn't test it 6+ hours that would correlate with the interval I complained about so they supplied me with a new one. I really felt stupid when the new one did what I perceived as the same thing to me. It hasn't happened again since. Getting back to the results of the current machine, there was a very noticeable jump in the major leaks. That's why an inspection of the hose and nasal pillow was done. Both in good condition. I put on the mask and started the unit. Moving the hose didn't reveal any splits. I saw in the screen of the unit that it indicated it was meeting the upper and lower pressures with each complete breath. I'm aware of waking 2-3 times a night because I recall looking at the clock (midnight, 2am, 5am) I fall asleep listening to reruns of Art Bell. You don't think Art is planting suggestions in my sub conscience do yo? :-0
07-13-2015 07:19 PM
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trish6hundred Offline

Advisory Members

Posts: 6,449
Joined: May 2012

Machine: Resmed S9 AutoSet for Her
Mask Type: Full face mask
Mask Make & Model: Fisher & Paykel Simplus
Humidifier: H5i Heated Humidifier
CPAP Pressure: 10 - 7-20 Cm H2O
CPAP Software: Not using software

Other Comments: I started CPAP in 2008. Totally blind since birth.

Sex: Female
Location: Missouri, USA

Post: #8
RE: Sudden rise in AHI
Hi jeffreyclay,
WELCOME! to the forum.!
Good luck getting your machine problems straightened out, Hang in there for more responses to your post.

trish6hundred
07-13-2015 07:35 PM
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kaiasgram Offline

Advisory Members

Posts: 242
Joined: Aug 2013

Machine: S9 VPAP Auto
Mask Type: Nasal pillows
Mask Make & Model: Aloha
Humidifier: H5i
CPAP Pressure: 8-10
CPAP Software: SleepyHead

Other Comments:

Sex: Female
Location: Northern California

Post: #9
RE: Sudden rise in AHI
You have an S9 VPAP (bilevel) machine so are you sure about your pressure settings? You're saying 13-16 -- is that 13 EPAP and 16 IPAP? If it's a VPAP Auto, then there's more to the story about what your pressure settings actually are. You'd have a Min EPAP pressure setting, a Max IPAP pressure setting and a pressure support (PS) setting.

Do you know how to access the clinical menu of your machine to see all the pressure and pressure support settings? If not, that would be a good first step to investigating what your machine is doing. Given that both machines are doing the same thing it sounds like they're functioning properly and you'd probably feel better if you understood what's actually going on.

Looking more closely at your SleepyHead data might also be useful -- the graphs (Flow Rate, Event Flag, Pressure, Leak, Flow Limit and Snore graphs are particularly helpful) often contain valuable information about what's going on during the night.
07-13-2015 07:36 PM
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jeffreyclay Offline

Members

Posts: 5
Joined: Apr 2015

Machine: Resmed S9 "CPAP Auto"
Mask Type: Nasal mask
Mask Make & Model: Mirage
Humidifier: H5
CPAP Pressure: 13-16
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location: Central Virginia

Post: #10
RE: Sudden rise in AHI
(07-13-2015 07:36 PM)kaiasgram Wrote:  You have an S9 VPAP (bilevel) machine so are you sure about your pressure settings? You're saying 13-16 -- is that 13 EPAP and 16 IPAP? If it's a VPAP Auto, then there's more to the story about what your pressure settings actually are.


Machine: S9 VPAP Auto
Mask Type: Nasal pillows
Mask Make & Model: Aloha
Humidifier: H5i
CPAP Pressure: 8-10
CPAP Software: SleepyHead

Other Comments:

Sex: Female
Location: Northern California

I posted my pressures much like the way you do.
07-15-2015 06:51 PM
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