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


New Posts   Today's Posts

AHI Increases as Night Progresses
#1
Hey All,

I am a recently diagnosed OSA patient. I am currently about 3.5 weeks into treatment with the following prescription:

CPAP: DreamStation APAP
Min Pressure: 5.0
Max Pressure: 10.0

After a couple of weeks on the CPAP, my AHI was around 6.0. After reading around the boards here, I upped my minimum pressure to 6.5 which seemed to have helped dramatically, and my AHI is averaging about a 3.0 and my clear airway events remained around 0.3.

I noticed a trend that early in the night my AHI is extremely low, but as the night progresses it seems to increase.

Looking at the charts, it looks like my 10.0 maximum is at a good place as I rarely reach the max. My 90% pressure is 7.9. Should I increase the minimum pressure to 7.0 and see if that helps?

Thanks in advance!

[attachment=2199]
Post Reply Post Reply
#2
Not sure what the chart is saying since I've not seen one like it before. In that middle graph, what do the bottom numbers represent? The 0-10? That's not the time of night, I can tell that.

But...AHI is the number of events divided by time. So there are two factors involved in determining the AHI. As time goes on during the night, the AHI is going to change. Go down sometimes, go up others.

Other factors to consider is sleeping position. It could be you roll over onto your back later in the night which increases the likelihood of events which also increases the AHI.
PaulaO2
Apnea Board Moderator
www.ApneaBoard.com


Breathe deeply and count to zen.

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.




Post Reply Post Reply
#3
Mateobus,
In reply to your question, it wouldn't hurt to raise the minimum pressure to 7cm.
It may tackle some of those hypopneas. The max pressure looks ok.

Once you make a change, try to keep it for at least a week to 10 days.
OpalRose
Apnea Board Moderator
www.ApneaBoard.com

How to Organize and Post ScreenShots

http://sleep.tnet.com/resources/sleepyhead/shorganize
https://sleep.tnet.com/reference/tips/imgur

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.




Post Reply Post Reply


#4
(02-27-2016, 02:48 PM)PaulaO2 Wrote: Not sure what the chart is saying since I've not seen one like it before. In that middle graph, what do the bottom numbers represent? The 0-10? That's not the time of night, I can tell that.

But...AHI is the number of events divided by time. So there are two factors involved in determining the AHI. As time goes on during the night, the AHI is going to change. Go down sometimes, go up others.

Other factors to consider is sleeping position. It could be you roll over onto your back later in the night which increases the likelihood of events which also increases the AHI.

The 0-10 are the number of hours so after 4 Mateobus was in the 4th hour of PAP use.
Post Reply Post Reply
#5
Hi mateobus,
WELCOME! to the forum.!
I wish you much success with your CPAP therapy.
Hang in there for more responses to your post.
trish6hundred
Post Reply Post Reply


Possibly Related Threads...
Thread Author Replies Views Last Post
  Last night not a good night Novello1234 15 587 06-26-2017, 05:44 PM
Last Post: DavePaulson
Question [Treatment] AHI starts very low increases a lot during nite ricknfli 12 723 12-22-2016, 08:23 AM
Last Post: richb
  1st night with DreamWear mask - Best night ever pwgphoto 34 6,984 08-30-2016, 08:36 PM
Last Post: HoustonMIke
  Lower max pressure affecting pressure increases Rcgop 9 1,123 07-17-2016, 07:03 PM
Last Post: green wings
  New Resmed Airfit Mask F10 FFM Leaks increases AHI level??? rvlasek 10 2,327 07-16-2016, 03:36 PM
Last Post: Mary Anna
  [Treatment] Seeing significantly different AHI numbers night to night galenaforest 4 1,114 02-25-2016, 02:27 AM
Last Post: Dagmar1
  One night = 0 leaks, next night 30 L.....??? GrammaBear 3 1,094 01-28-2016, 01:39 PM
Last Post: justMongo

Forum Jump:

New Posts   Today's Posts




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.