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+--- Thread: UARS (/Thread-UARS--26783)
RE: UARS - Sleeprider - 10-22-2019
As I was suggesting, the over-ventilation may not be all bad, but we need to find a balance between comfort and the CO2 washout. It's actually possible to make a device that reserves some rebreathing space in your tubing so you can experience the benefits of pressure support without losing CO2. We have a wiki on it. http://www.apneaboard.com/wiki/index.php/Enhanced_Expiratory_Rebreathing_Space_(EERS)
I'm not saying enhanced expiratory rebreathing space is a solution you should pursue, but it is a way to use more pressure support than you could otherwise tolerate, and avoid central apnea.
Quote:Hypocapnia or hypocapnea (from the Greek words υπό meaning below normal and καπνός kapnós meaning smoke), also known as hypocarbia, sometimes incorrectly called acapnia, is a state of reduced carbon dioxide in the blood. Hypocapnia usually results from deep or rapid breathing, known as hyperventilation.
RE: UARS - tarah - 10-22-2019
Ok, I think I'm starting to understand a little bit more. I set IPAP minimum to 6, PS to 4, EPAP max to 15.
What are the little squiggles on the Flow Rate graph, right around zero?
I'm also on my way to the ENT today to try to figure out how to optimize nasal breathing because that is working against me here. Being able to sleep on my back again last night for the time in years actually helped quite a bit with better nasal breathing. It's at its worse when I lay on my side.
RE: UARS - slowriter - 10-22-2019
(10-22-2019, 01:25 PM)tarah Wrote: Ok, I think I'm starting to understand a little bit more. I set IPAP minimum to 6, PS to 4, EPAP max to 15.
No.
EPAP min = 6
IPAP max = 15
PS = 4
Almost there though!
RE: UARS - tarah - 10-22-2019
Ha! Ok, I changed it. Thanks for your patience.
RE: UARS - tarah - 10-22-2019
I have a masters degree in molecular biology, if you can believe that. Not sleeping for oh, 10 years, takes it's toll. Clearly.
RE: UARS - sheepless - 10-22-2019
I hear you! many of us have or have had serious brain fog or cognitive impairment. I read contradictory things with respect to whether we'll ever fully recover but I can tell you it does improve with better sleep.
RE: UARS - Sleeprider - 10-22-2019
When this last setting change started, you were going to try EPAP min 4.0, PS 4.0 and IPAP max at 14 or 15 (it won't matter). The point being, don't set PS above 4.0. http://www.apneaboard.com/forums/Thread-UARS--26783?pid=316047#pid316047
I have done enough undergrad biology, including molecular biology to appreciate your MS degree. You will have to catch up with Melman our resident microbiologist and compare notes on humidifier sanitation.
RE: UARS - slowriter - 10-22-2019
(10-22-2019, 02:22 PM)Sleeprider Wrote: When this last setting change started, you were going to try EPAP min 4.0, PS 4.0 and IPAP max at 14 or 15 (it won't matter). The point being, don't set PS above 4.0.
Bonjour suggested the EPAP min of 6, I think based on her previous CPAP settings.
RE: UARS - Sleeprider - 10-22-2019
(10-21-2019, 11:58 AM)Sleeprider Wrote:(10-21-2019, 11:08 AM)tarah Wrote: Ok, so I used my old machine until I woke up at 3 a.m., wide awake. Thought that would be a good time to try the new machine, just to get used to how it feels differently. I'm not sure that I went back to sleep, but the machine fairly quickly ramped up the pressure to over 10. I guess I don't understand why it's doing that. My old machine would only ramp up pressure when I was deeply asleep.
The other question I have is why I shouldn't just set the inspiration pressure to a set number so that's it's not ramping pressure up and down all night. It seems like that could really bother someone who's already sensitive to breathing things at night.
Your machine is now in Vauto mode with an EPAP min of 6.0 and PS of 4. With these settings, the minimum pressure is 10.0/4.0. It appears you have a 15 minute ramp set.
If you want lower pressure, you must lower the EPAP min to 4.0 or 5.0. It's very possible you will find that works fine as there is very little change in pressure once your machine reaches its current minimum pressure. Since you don't have any apnrea, I see no reason to start at EPAP min of 6.0. Let's back down to these settings, and see where it takes you:
EPAP min 4.0
Max Pressure 14.0
PS 4.0
Your machine will start at 8.0/4.0 and will increase pressure if needed. Please turn off ramp.
(10-22-2019, 02:25 PM)slowriter Wrote:(10-22-2019, 02:22 PM)Sleeprider Wrote: When this last setting change started, you were going to try EPAP min 4.0, PS 4.0 and IPAP max at 14 or 15 (it won't matter). The point being, don't set PS above 4.0.
Bonjour suggested the EPAP min of 6, I think based on her previous CPAP settings.
I think that covers the history. Tarah tried EPAP min 6/PS 4 and complained about the higher pressure. I suggested EPAP min 4 or 5/PS 4 to reduce the pressure. That has not yet been tried.
RE: UARS - slowriter - 10-22-2019
(10-22-2019, 02:54 PM)Sleeprider Wrote:(10-21-2019, 11:58 AM)Sleeprider Wrote:(10-21-2019, 11:08 AM)tarah Wrote: Ok, so I used my old machine until I woke up at 3 a.m., wide awake. Thought that would be a good time to try the new machine, just to get used to how it feels differently. I'm not sure that I went back to sleep, but the machine fairly quickly ramped up the pressure to over 10. I guess I don't understand why it's doing that. My old machine would only ramp up pressure when I was deeply asleep.
The other question I have is why I shouldn't just set the inspiration pressure to a set number so that's it's not ramping pressure up and down all night. It seems like that could really bother someone who's already sensitive to breathing things at night.
Your machine is now in Vauto mode with an EPAP min of 6.0 and PS of 4. With these settings, the minimum pressure is 10.0/4.0. It appears you have a 15 minute ramp set.
If you want lower pressure, you must lower the EPAP min to 4.0 or 5.0. It's very possible you will find that works fine as there is very little change in pressure once your machine reaches its current minimum pressure. Since you don't have any apnrea, I see no reason to start at EPAP min of 6.0. Let's back down to these settings, and see where it takes you:
EPAP min 4.0
Max Pressure 14.0
PS 4.0
Your machine will start at 8.0/4.0 and will increase pressure if needed. Please turn off ramp.
(10-22-2019, 02:25 PM)slowriter Wrote:(10-22-2019, 02:22 PM)Sleeprider Wrote: When this last setting change started, you were going to try EPAP min 4.0, PS 4.0 and IPAP max at 14 or 15 (it won't matter). The point being, don't set PS above 4.0.
Bonjour suggested the EPAP min of 6, I think based on her previous CPAP settings.
I think that covers the history. Tarah tried EPAP min 6/PS 4 and complained about the higher pressure. I suggested EPAP min 4 or 5/PS 4 to reduce the pressure. That has not yet been tried.
Ah. I guess I was unclear whether she was complaining about pressure per se, or about the pressure ramp.
But I can see the point in starting lower if in doubt.