Philips Trilogy 200 사용자 설명서

Trilogy200 clinical manual

In S, S/T, PC, T, PC-SIMV, and SIMV modes, rise time is the amount 
of time it takes the device to change from the expiratory pressure 
setting to the inspiratory pressure setting.  Rise time levels of 1, 2, 
3, 4, 5, or 6 progressively reflect slowed response of the pressure 
increase that will take place at the beginning of inspiration.  Adjust 
the rise time to find the most comfortable setting for the patient. 

PRESSURE

IPAP

EPAP

TIME

Rise Time

Average Volume Assured Pressure Support (AVAPS) is a feature 
available in the S, S/T, PC, and T modes. It helps patients maintain 
a tidal volume (V

T

) equal to or greater than the target tidal volume 

(Volume setting in the ventilator) by automatically controlling the 
pressure support (PS) provided to the patient. The AVAPS feature 
adjusts PS by varying the IPAP level between the minimum (IPAP Min) 
and maximum (IPAP Max) settings. AVAPS averages V

T

 and changes 

the PS value gradually. This occurs over several minutes. The rate of 
change is slow, so that the patient is not aware of breath-to-breath 
pressure changes.

As patient effort decreases, AVAPS automatically increases PS to 
maintain the target tidal volume. The IPAP level will not rise above 
IPAP Max, even if the target tidal volume is not reached. Conversely, 
as patient effort increases, AVAPS will reduce PS. IPAP will not fall 
below IPAP Min, even if the target tidal volume is exceeded. 

If the Ramp function has been activated, it will take precedence over 
the AVAPS feature. Once ramp is complete, AVAPS will resume.