(01-02-2020, 05:49 PM)Plmnb Wrote: ... What are Ti Max and Ti Min?..
...What are Trigger and Cycle?...
Grab the Clinical manual and read it. :-)
It's fine-tuning.
They control how aggressively (ie how quickly) the pressure builds up as you start to inhale and how fast it drops when you exhale.
Here are some quotes from the manual (there are pictures in there to make it more understandable)
Triggering and cycling
VAuto and S modes only
The device has adjustable trigger/cycle sensitivity to optimise the sensing level according to patient conditions.
Under normal conditions, the device triggers (initiates IPAP) and cycles (terminates IPAP and changes to EPAP) as it senses the change in patient flow. Patient breath detection is enhanced by ResMed's VSync automatic leak management.
TiControl - Inspiratory time control
VAuto and S modes only
Unique to ResMed bilevel devices, TiControl™ allows the clinician to set minimum and maximum limits on the time the device spends in IPAP. The minimum and maximum time limits are set at either side of the patient’s ideal spontaneous inspiratory time, providing a ’window of opportunity’ for the patient to spontaneously cycle to EPAP.
The minimum time limit is set via the Ti Min parameter and the maximum time limit is set via the Ti Max parameter.
TiControl’s Ti Max and Ti Min parameters play a significant role in maximising synchronisation by effectively intervening to limit or prolong the inspiratory time when required. This ensures synchronisation even in the presence of significant mouth and/or mask leak.
The pictures help a lot though