Bundy

Hi Sierra, I was not clear relating to finding the pressure of 4cm (fixed) more comfortable than the alternative setting of 4-6. The technician I was seeing said the set pressure was 4-6 which I thought was odd and now that I've had a play around with the settings realize she may have misspoken or been referring so something else. I meant to say I found the set pressure more comfortable than the automatic pressure (the range of which I was not informed so it could have been anything). I found the sleep technician very uninformative and even when I would ask a question she would just respond with "yes". I have received much more in-depth and helpful information from you which I truly appreciate, it is obvious from your responses you're an educated person. Thanks for the link to the article, I hadn't thought of checking journal articles so that is very helpful indeed although I'm not very good yet at reading reports so I appreciated your interpretation. Also, I'm pretty much stuck with the machine I have either way. The reason I purchased an inferior machine was purely financially motivated as it was all I could afford. Another bothersome result of seeing the sleep technician is they seemed to be very secretive (and understandably so) about how they set up and adjust everything so that the customer relies on coming back to them and also to purchase one of their top of the line but also overpriced machines. So I'll do the best with what I have. I had looked at that youtube link that's how I figured out how to adjust the settings, it was very helpful. My sleep study reports my obstructive events were predominately hypopnoeic in type, so I'm not sure if that would influence what I would adjust my settings to. Last night I set it on an auto range of 4cm to 12cm, and the results were P95=8.5, Pmean=6.5, AHI=.02, SNI=2.3, and Leak=3.1. I found this comfortable enough without any concerns except I can hear the machine a little in comparison to no noise at all on set pressure. I had the Reslex turned off, but I will adjust to 3 as suggested. I know it's only one day's data so I'll leave the other settings until I hear back from you. I don't mind using the auto pressure, I had already ordered this machine before the sleep technician informed me I was showing consistent enough results to try a set pressure. Either way, I'd rather have it set on whatever is best when I can figure out what that is. It's much more complicated than I would have thought, thanks again for your input it is much appreciated.

Yep, that's why I thought I'd ask around. Thanks, heaps for your input. I'm going to switch it back to auto for a couple of days and see what the results show.

Thanks Sierra,

I think you're right, it's not likely both machines are incorrect which means I must be responding extremely well to using a machine or I have been misdiagnosed. I shall investigate further by going to a different clinic and doctor, and report back my findings. Thank-you. P.S. Thanks for the link, it's a replicate of what's in the manual they sent me.

Hi snuzyQ, Sierra, and wiredgeorge, thanks for your replies. I tried the sleepyhead app and followed the instructions (thanks very much for that) but I couldn't get any data to transfer, I don't think the machine I'm using is supported. The machine I have purchased is a cheaper model, BMC Luna Auto CPAP, G2S A20/C20, and I use a nasal mask. During my trial under supervision with my local sleep specialists, I was using a Fisher and Paykel Sleep Style Auto CPAP with a nasal mask. After trialing Auto mode with consistently low AHI results and no other concerns except air leakage in the first two weeks, the technician set it down to CPAP at 4-6 (her words), for the third and fourth week (which is where I am at now). I have switched over to the BMC (only last few days) and set (yes in the clinical menu George) the machine to a set pressure of 4cmH2o with a result of 0.0 AHI. As you guys have mentioned, 4 does seem low and yes it is slightly uncomfortable but not nearly as uncomfortable as I found the pressure when it was set on auto. This is precisely the reason it makes me think the diagnosis was wrong. Getting results of 0.0 AHI though I would think it is best to leave the settings as they are? I am very new to this though and don't want to assume I have it figured out, your advice and opinions are appreciated.

Hi there, I'm new to getting apnea treatment. My sleep study results showed my AHI was 46 (severe). I started a trial straight away and immediately my AHI reduced to .6 and after a few weeks, I'm down to .2 or nothing at all. I am now on a set pressure of 4cmH20 and have purchased my own Auto/CPAP machine. Whilst I am extremely happy to have responded to the treatment so well, I am bothered by the thought that perhaps I don't have OSA at all and that the test was wrong. I did have a bit of a cold at the time, and in hindsight, I may have been better to wait. I would just get another sleep test done, but I can't afford one right now. Has anyone else experienced this or could shed some light on my situation? It would be much appreciated.