apnea pressures vs hypopnia pressures?

W"hen the CPAP pressure relieves or prevents an apnea does it sometimes only turn that situation into an hypopnea? Does it take more or less pressure to "relieve" an apnea vs "relieve' an hypopnea?

No relationship between pressure and severity. Whatever pressure is needed to open the airway.

tyrinryan wrote: ↑

Sat Jul 13, 2019 4:39 pm

W"hen the CPAP pressure relieves or prevents an apnea does it sometimes only turn that situation into an hypopnea? Does it take more or less pressure to "relieve" an apnea vs "relieve' an hypopnea?

CPAP pressure is only preventative. It doesn't "relieve" any blockages. Your machine can not "blow open" anything. It will react to an event (apnea, hypopnea, or flow limitation) by increasing pressure in an attempt to prevent the next one from happening.

Thumper68 wrote: ↑

Sat Jul 13, 2019 5:34 pm

tyrinryan wrote: ↑

Sat Jul 13, 2019 4:39 pm

W"hen the CPAP pressure relieves or prevents an apnea does it sometimes only turn that situation into an hypopnea? Does it take more or less pressure to "relieve" an apnea vs "relieve' an hypopnea?

CPAP pressure is only preventative. It doesn't "relieve" any blockages. Your machine can not "blow open" anything. It will react to an event (apnea, hypopnea, or flow limitation) by increasing pressure in an attempt to prevent the next one from happening.

From WEB MD...
When you have sleep apnea, you can stop breathing, briefly, up to 30 times or more an hour when your airways close or get blocked. CPAP, short for continuous positive airway pressure, pushes air into them to keep them open.

tyrinryan wrote: ↑

Sat Jul 13, 2019 4:39 pm

W"hen the CPAP pressure relieves or prevents an apnea does it sometimes only turn that situation into an hypopnea? Does it take more or less pressure to "relieve" an apnea vs "relieve' an hypopnea?

Yes, sometimes when people have a lot of apneas, as they're increasing pressure they get to a point where there's enough pressure to keep the airway from closing completely, but not enough to hold it open enough to breathe well, you'll go from a bunch of apenas to less apneas and more hypopneas, till you get enough pressure to prevent those.

I would follow basic titration and would increase min pressure or stronger air-splint, 1cm at a time till the OA, H and FL clear
https://www.resmed.com/us/dam/documents ... er_eng.pdf

So palerider: does it make sense that one would need more pressure to open the airway "fully enough" to prevent an hypopnea than to open the airway "a bit" to prevent an apnia? They are both the same length of time --10 secs? Or is there some sort of effect like the difference between static and moving friction? I am thinking of it in terms of the comfort (resmed's epr) action.

tyrinryan wrote: ↑

Sun Jul 14, 2019 12:10 am

So palerider: does it make sense that one would need more pressure to open the airway "fully enough" to prevent an hypopnea than to open the airway "a bit" to prevent an apnia? They are both the same length of time --10 secs? Or is there some sort of effect like the difference between static and moving friction? I am thinking of it in terms of the comfort (resmed's epr) action.

There's a ..... stupid 'design' decision in sleepyhead that marks all hypopneas as 10 seconds on your type of machine, even though the machine doesn't record duration of hypopneas. The next version of Oscar is going to fix that.

So, you really have no way of knowing how long a hypopnea is.

Plus, the duration doesn't have anything to do with how much pressure it takes to open the airway.

As to your question on pressure, ever had a flat tire? (apnea) or a low tire (hypopnea)?

How was that resolved?

palerider wrote: ↑

Sun Jul 14, 2019 1:20 am

As to your question on pressure, ever had a flat tire? (apnea) or a low tire (hypopnea)?

How was that resolved?

Dog Slobber wrote: ↑

Sun Jul 14, 2019 7:32 am

palerider wrote: ↑

Sun Jul 14, 2019 1:20 am

As to your question on pressure, ever had a flat tire? (apnea) or a low tire (hypopnea)?

How was that resolved?

Tire's still flat after the puncture repair.... how to resolve?