These auto adjusting machines will also increase the pressure when it senses flow limitations and/or snoring. It's not just about the OAs and hyponeas. Thanks You are absolutely right. Looking at the graphs, I see that these pressure spikes correspond to snoring and/or FL events of about 0.30, Usua...

The Ipap/Epap pressure values go up and down through the night, which is normal. THey reach periodically the max set values ( in my case 14-18), but when they do there are no AHI's recorded on the graph on the corresponding timeline. I am just curious. Normally I would expect pressure peaking when t...

Thanks After the inital settings prescribed by my doctor two years ago( 8-15) I have tried a wide array of values ranging from 10 to 16 EPAP and 10-20 for the IPAP, in various combinations, taking care to keep in the average a 4 cmH20 difference between EPAP and IPAP. I would keep each new setting f...

Historically, over the more than 2 years BPAP treatment my AHI’s average has been below 1, ranging from 0.00 to 0.81. with O.A.s events ranging from 0 ( very often) to 0.30. The reason of my post is that for the last few months I have not been feeling as refreshed at wake up as I used to . Sluggish ...

Your flow limitation graph is fairly active. Not horribly horrible active but fairly active. See this FL graph...it's boringly inactive. http://i.imgur.com/vsG7I5Ll.jpg Is it possible that you are experiencing some nasal congestion? If so it is possible that the machine is experiencing the reductio...

Thanks for the feedback Here is the screenshot including the left column summary with the statistics . By the way the AHI's for this night ( 2.02) are unusually high .Usually they are well below 1, but the flow limit is always within the same 0.15-0.35 range regardless of the AHI score. If it is not...

My Sleep Apnea has dramatically improved after 2 years of CPAP. My AHI’s are now down to about .60 every night, mostly H’s, some O.A..’s and occasional RERA’s . Lately, however, I a’m feeling more tired and sleepy. I’m 80, in good health and exercise a lot. I tried different pressure settings over t...

Why for some ( probably most) OA’s and H’s it takes a pressure close to the upper limit of the setting, while in some other cases it doesn’t need to be so high? Because we don't sleep the same at all times during the night. We often change position as well as go through all the various sleep cycles...

Flow limits are an impairment to the flow-rate through the respiratory tract. Nasal congestion is a typical contributor. Flow limits can occur both on inspiration and expiration. Your flow limits are driving up your pressure. Look closely at the flow limit graph and then look at the pressure graph,...

1. Yes, I see that high FL’s correspond to spikes in the pressure, but I still don’t see why the flow limits drive up the pressure. I can always go by trial and error in raising the pressure, for inst. to 12-20 as you suggest, but it would help if I understood . 2. On the screenshot of April 3rd wi...

I still don’t see why the flow limits drive up the pressure. First understand that the machine only measures air flow. It doesn't measure if you are asleep or not. It can't. Also it can't distinguish between a reduced air flow because of nasal congestion and/or airway collapse. When in auto adjusti...

I said nothing at all about the median. Maybe someone else did. I don't get hung up on those statistics numbers because they are too easily skewed as a general rule to the high side by relatively short periods of time at higher numbers. You are hitting the max of 18 cm at some points during the nig...

Getting there. I think I begin to understand. The screenshot for April 1st with the pressure settings at 13-18 shows that the green line on the pressure graph keeps at about 13cmH2O with the red line at about 18cmH2O. If this is what you call the median , then it could help to adjust the pressure a ...

1. Yes, I see that high FL’s correspond to spikes in the pressure, but I still don’t see why the flow limits drive up the pressure. I can always go by trial and error in raising the pressure, for inst. to 12-20 as you suggest, but it would help if I understood . 2. On the screenshot of April 3rd wit...

Thanks for the input. Indeed, I have chronic nasal congestion and this may explain my RERA’s. As to the FL graphic being “ ugly” perhaps you can elaborate why..in short, simple words. As to the minimum pressure settings needing an upward adjustment are you referring to the 10-15 cmH2O screen shot or...