Maquet SERVO-air, User Manual, Page: 88 / 171

6.4.2 Inspiration time
The setting makes it possible to set the
inspiration time (T
i
) to a fixed time in seconds.
With this configuration, the unit for inspiratory
rise time and pause time automatically
switches to seconds. The corresponding I:E
ratio for each inspiration time setting is
displayed in the lower right information area
of the mode settings window.
As the inspiration time is explicitly set, a
change in the respiratory rate, for example,
will affect the I:E ratio. As a safety precaution,
there will therefore be an indication when the
resulting I:E ratio passes 1:1 in either direction.
Note: When the inspiration time is directly
set, the breath cycle time parameter is not
displayed when an SIMV mode is selected,
since there is no need to set it.
6.5 End inspiration
End inspiration:
• is the point at which inspiration changes to
expiration in supported ventilation
• if set too low, inspiration will be longer,
which may cause pulmonary hyperinflation
and increased work of breathing
• if set too high, inspiration will be shorter,
which may mean that the patient receives
insufficient tidal volume
100%
50
88
SERVO-air Ventilator System v2.2, User's Manual
| 6 | Ventilatory settings and functions |