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[CPAP] AHI increases significantly in last 1-2 hrs of sleep
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[CPAP] AHI increases significantly in last 1-2 hrs of sleep
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ppk8
Posts: 23 Threads: 7 Joined: Jan 2018
Machine: Philips System One
03-15-2018, 09:04 PM
RE: AHI increases significantly in last 1-2 hrs of sleep
hi all - went with fixed pressure at 9 and c flex off, AHI came down to 4.4. feeling much better now also. please see the screenshot/
do you recommend to change the pressure further (up op down?) or keep going with this setting for a while 
Gideon
Wiki Editor 
Posts: 12,834 Threads: 298 Joined: Dec 2016
Machine: ResMed Aircurve 10 VAuto
RE: AHI increases significantly in last 1-2 hrs of sleep
That said a lot. See how your CA events went down. That is what we wanted to see. Your obstructive events went up a bit.
Your AHI is under 5 which technically says that you are treated. From here on I would recommend small changes, smaller than what I would normally use. So only .2 changes and 3 to 7 days for changes to settle in, including this one. A single day does not make trend. The ROT is to raise Pressure for Obstructive events and Lower pressure for CA events, a bit of a conflict and a balancing act. If you were to change pressure now I would try .2 higher. These are small changes to tweak the result. And, very important, how do you feel? Fred
Gideon - Project Manager and Lead Tester for OSCAR - Open Source CPAP Analysis Reporter
Download OSCAR OSCAR - The Guide New to Apnea? Helpful tips to ensure success Soft Cervical Collar Mask Primer Dealing with a DME Organize Charts Optimizing Therapy
Sleeprider
Wiki Editor 
Posts: 27,765 Threads: 86 Joined: Dec 2014
Machine: Resmed Aircurve 10 VAuto
03-15-2018, 09:33 PM
RE: AHI increases significantly in last 1-2 hrs of sleep
I like it! As bonjour said, keep the same or add 0.5 cm. A little bit can go a long way.
Resmed changes pressure in .2 increments, and I'm pretty sure Philips has .5 increments.
Sleeprider
Apnea Board Moderator www.ApneaBoard.com ____________________________________________ Download OSCAR Software Soft Cervical Collar Optimizing Therapy Organize your OSCAR Charts Attaching Files Mask Primer How To Deal With Equipment Supplier 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.
ppk8
Posts: 23 Threads: 7 Joined: Jan 2018
Machine: Philips System One
03-15-2018, 11:14 PM
RE: AHI increases significantly in last 1-2 hrs of sleep
hi guys - thank you for your reply and help, indeed feeling much better.
Yes, I might try 0.5 higher to reduce the obstructive events but will keep an eye out whether this increases the central events. I will keep you updated.
Sleep2Snore
Posts: 1,039 Threads: 13 Joined: Aug 2014
Machine: ResMed Airsense Auto + Remstar CPAP spare.
03-16-2018, 09:49 AM
RE: AHI increases significantly in last 1-2 hrs of sleep
It is a bit of trial and error. Just make small adjustments and see what happens. If things get worse, go back to where you got the best results.
I am NOT a doctor. I try to help, but do not take what I say as medical advice.
Every journey, however large or small starts with the first step. 
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[CPAP] AHI increases significantly in last 1-2 hrs of sleep
