Maquet SERVO-air, User Manual, Page: 89 / 171

6.6 Inspiratory rise time
The inspiratory rise time (T
insp.rise
):
• is the time taken to reach peak inspiratory
flow or pressure at the start of each breath
• is expressed in seconds or as a percentage
of the respiratory cycle time depending on
how the ventilator is configured
0.10
An increased inspiratory rise time will affect
the rate of flow/pressure increase and can be
evaluated by the shape of the flow and
pressure waveforms.
In supported modes, the inspiratory rise time
should normally be increased from the default
setting to enhance patient comfort.
Inspiratory rise time set as a percentage is
applicable in:
• VC
• PC
• PRVC
• all SIMV modes
• all Automode modes
Inspiratory rise time set in seconds is
applicable in:
• PS
• VS
• Bi-Vent/APRV
Note: When the ventilator system is
configured for setting of inspiration time
rather than I:E ratio, the unit for inspiratory
rise time automatically switches to seconds
for all ventilation modes.
SERVO-air Ventilator System v2.2, User's Manual
89
| Ventilatory settings and functions | 6 |