Rodan

Hi ydono, I have the same problem with mine. Sometimes it sounds a lot like rhinoceros as I inhale. Not kidding. The rhinoceros makes a kind of nasal whistle that sounds just like my machine. Like you, taking the humidifier out and putting it back and sometimes helps. When that doesn’t help, taking it out, opening it up, taking out the gasket, putting the gasket back in, closing it up, and putting the humidifier back in usually does the trick.

Something I’ve been trying for the past few days is putting a rubber band around the whole unit lengthwise so the humidifier is being pushed in more tightly. I haven’t had any problems since, so maybe it’s working.

Another thing that occurs to me is that if the noises are starting in the middle of the night, it must be that something is changing over the course of the night. I’m wondering if it could be that heat in in some part of the machine increases as the water level goes down, and that causes some part to expand and lose its seal. Maybe if we turn down our humidity level it will reduce the problem. I had my humidity level and 7. Do you also have yours at a fairly high level?

thanks for the info about a new humidifier not helping.

So I tried another AirSense 10, and it did the same thing, and they didn't have any other options, so I kept my machine. That was a couple months ago. Since then, it has kind of mellowed out. There is still some pulsation in the pressure, but not enough to be a bother. Also, I've figured out that the pressure peaks are in time with my heartbeat — 2 peaks per heartbeat. So I suppose the phenomenon is caused by some kind of resonance between the sensors and actuators in the machine and little pressure waves created by the pulse in my lungs. Best theory I've got, anyway.

Thanks again for your help, Sierra!

Loving SleepyHead. Unless I'm misreading this, it looks like the fluctuations I'm talking about are recorded pretty well.

I don't suppose you get those kind of sawtooth lines when you zoom in, do you?

Thanks for the mask compatibility list. I checked it, and it was correct, so that's one more thing ruled out.

Thanks for testing that and for the additional advice. Yes, I think it may be a defective machine. I got an appointment with respiratory therapist at the equipment supplier on Friday, so I should be able to get it figured out then. Thanks again!

Hi Sierra. Thanks for the quick response. I'm using a nasal mask and I did check that it was set for that, and it was. I've downloaded sleepyhead but will have to wait a few days for the card reader to arrive. It will be interesting to see if those pulses show up. I'll let you know when I get more info Thanks again!

Hello. Very happy to have found this forum. Thanks for everything you've put here.

I recently switched from a an old RemStar machine to an AirSense10 and I'm noticing a kind of "bounciness" in the pressure. I'm not talking about the quick pulses (like 4 per second) the machine sends out when it senses an obstruction. What I mean is that when I breathe in or out in a way that is not very slow and smooth, there's a kind of reverberation in the pressure. For example, if I exhale quickly it kind of goes SHSHSHShshshshshSHSHSHshshshshSHSHSHshshshshsh with those pressure pulses being a little less than one second apart. I can hear the pulses, feel them in my lungs, and feel and see the mask moving up and down, so I know it's not just a perception. I've turned off EPR and switched from auto to CPAP but it still happens. So I'm wondering if it's just something that's inherent in this machine, or if the machine is defective.

Have any of you noticed this happening with your machine? Thanks! Rodan (pressure: 6)