Hello Guest, Welcome to Apnea Board !
As a guest, you are limited to certain areas of the board and there are some features you can't use.
To post a message, you must create a free account using a valid email address.

or Create an Account


[Treatment] Fine Tuning - What's the cause of these hypopnea events?
#1
Here's a snapshot from SH from a typical night (last night, to be exact):

   

This shows a period of about 30 minutes during which my machine up'd the pressure several times in response to minor flow limitations, eventually maxing out at 20 and waking me up. I have several episodes similar to this every night - last night, there were 4 - two that woke me up and two that did not.

I'm trying to assess what might be causing these periods, whether they're anything to be concerned about, and what, if anything, I might want to do about them.

Working theory: these are periods when I roll over onto my back.

If you look at about 2:16 AM, there's a CA and a mini-hypopnea - this pattern looks very much like what's seen at 2:43 AM (just after re-starting). At 2:43 I know I was awake - was I awake (albeit briefly) at 2:16 as well?

Between 2:16 and 2:27, it looks like I'm sleeping peacefully, then a series of pressure bumps starts, with each bump followed by a period of adjustment in my breathing, culminating in a series of OA/H that drive the pressure up to max until I awake at 2:41.

So, what do you think? I'm planning on trying out some of the pillow-devices that prevent rolling over onto my back. I'd also like to get a logging oximeter to see what sort of desaturation I'm seeing associated with these periods (if any). Any other ideas for pinning down what's really going on during these periods?

-cd

Reply
#2
Looking at both flow limitation and flow rate, you are experiencing diminished flow at those times.
And, your pressure is really ramping up as you noted.

I think your working theory is sound; and keeping off your back is worth trying.

I usually side sleep for that reason. I'm able to stay on my side for the night.

There have been several methods talked about on the board for preventing rolling on the back.
One method was sewing tennis balls in the back of a tee-shirt.
Whatever it takes...

Regards,

Mongo
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.
Reply
#3
I agree with justMongo. I doubt that you O2 sat will be doing much as it looks like you have some serious recovery breathing after each event. O2 in your system just does not drop al that fast
Reply


  
#4
(12-07-2015, 10:52 PM)PoolQ Wrote: I agree with justMongo. I doubt that you O2 sat will be doing much as it looks like you have some serious recovery breathing after each event. O2 in your system just does not drop al that fast

That's what I figure too - but I'm a data nerd, so I'll get the Oximeter and find out for sure. I'll be very surprised if there's much (if any) noticeable desat during those short events.

Thanks for the note Smile
Reply


Possibly Related Threads...
Thread Author Replies Views Last Post
  92 events easkey 3 170 01-10-2017, 07:51 PM
Last Post: trish6hundred
  Fine tuning settings Cranberry Ray 4 266 01-07-2017, 05:08 AM
Last Post: kwhenrykerr
  Variable events per hour a3sulliv 8 361 12-20-2016, 11:19 PM
Last Post: trish6hundred
  False events in SleepyHead marcus10 5 329 12-18-2016, 09:16 PM
Last Post: srlevine1
Question 4 Days on first Smart Machine (Good AHI, but lots of events) kacn6771 6 394 12-16-2016, 11:00 AM
Last Post: Sleeprider
  [Equipment] Mask Events suddenly showing up gillw 3 175 12-12-2016, 08:18 PM
Last Post: trish6hundred
  Fine tuning help please Slim1950 2 203 12-12-2016, 10:42 AM
Last Post: Sleeprider

Forum Jump:


About Apnea Board

Apnea Board is an educational web site designed to empower Sleep Apnea patients.

For any more information, please use our contact form.