apap algorithm S9 question

I've searched this site and internet for info about how apaps decrease pressure during the night. There is plenty of info about how they increase pressure in response to events, but not much info about how they decrease pressure after stabilization.

I assume the goal of apap algorithm is to operate at lowest effective pressure.

For example, with a range of 13 to 18, if the apap increases pressure to 16 in response to an event, how and when does it decrease back toward the lower end of the range. One source I've found says that once breathing is regular again, the apap will decrease incrementally toward the minimum over 20 minutes. I'm wondering if this is how the S9 Autoset works?

Does anyone know?

Thanks.

Resmed does not reveal the glide- path formula


Event detection and response

Some APAP algorithms detect events
and apply a fixed pressure setting
regardless of the extent of the event.
ResMed’s AutoSet, however, assesses
the severity of the event—whether it
is limited flow, snoring or an
apnea—determines the best pressure
solution, and applies it comfortably,
without delay.

RandyJ wrote:I've searched this site and internet for info about how apaps decrease pressure during the night. There is plenty of info about how they increase pressure in response to events, but not much info about how they decrease pressure after stabilization.

I assume the goal of apap algorithm is to operate at lowest effective pressure.

For example, with a range of 13 to 18, if the apap increases pressure to 16 in response to an event, how and when does it decrease back toward the lower end of the range. One source I've found says that once breathing is regular again, the apap will decrease incrementally toward the minimum over 20 minutes. I'm wondering if this is how the S9 Autoset works?

Does anyone know?

Thanks.

It's likely just a time since last pressure-changing-event scale.. Can verify this by looking at the raw data .

del