A little history
7 years ago I started therapy with a basic Resmed CPAP. It was set at 8. A few years later I tried an auto CPAP as a test for a week. The result was an average of 14. The results ended up on my Internist's desk and I couldn't get him to make a decision so I started setting the pressure. I couldn't handle the pressure od 14 but did work up to 13. In the last year as my old CPAP stared failing I was up to 15.
Now to my current problem. The new Respirionics is an auto CPAP set from 5 to 20. My experience has been that the pressure that I feel coming out of the mask vent is no where like I am use to. Believing that the auto feature was not working and it was just staying at the low setting I changed the setting of the machine so that it was supposed to auto start when I put the mask on but it didn't start.
I took it back to the provider and the technician reset the settings and I tried it in her office and it did start automatically. But as luck would have it, that night it didn't work for me. I checked the settings and they are correct.
I'm thinking I got a bum machine and am wondering if the pressure is ever changing. It is certainly nothing like it use to be, but maybe the past pressure was too high.
Your thoughts would be appreciated. Thanks
12-07-2014, 01:20 PM
(This post was last modified: 12-07-2014, 01:36 PM by justMongo.)
First, some people say pressure when they mean flow.
Your new machine is set to start at a pressure of 5 cm-H2O. In response to it sensing flow limitation, snoring or obstructive apnea, it raises pressure. The set limits permit it to raise a high as 20. So, you will not feel the 13 cm-H2O as in the past -- it will be 5 to start. During sleep it should rise to whatever level it finds "best" for your apnea.
Auto start sometimes doesn't work with a full face mask. There is a flap valve in the mask elbow that prevents asphyxiation in the event the machine quits. Find it, and hold you fingers over as much of it's large vent hole while inhaling. That should make it start.
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.
Since you worked up to where you could handle a pressure of 15, what you could try to do is to set your minimum pressure to 12 and your maximum pressure to 17. This will give you a tighter range for your machine to work between.
Hang in there for more suggestions.