Maquet SERVO-i V3.1, User Manual, Page: 67 / 283

65
Servo
…
User´s manual
US edition
Order No: 66 00 261
Infant Adult Universal Options
2
Open Lung Tool
Clinical performance
The Open Lung Tool is a tool for graphically
visualizing measured and calculated values
for easier interpretation of already available
ventilation data. Three simultaneous
graphical trends are presented with a fixed
set of parameters as a function of a number
of collected breaths. The User Interface
features an adjustable cursor which helps
illustrate the opening and closing airway
pressures. This alternative presentation may
be used for immediate visualization of the
effect of altered settings.
Note: When the Y Sensor Measuring
function is active, then the values recorded in
the Open Lung Tool are based on values
measured at the Y-piece. Note that when this
function is disabled or enabled, then the
compliance in the patient circuit may cause
the values in the Open Lung Tool to change.
Read more about the Open
Lung Tool
Operating: page 175
The following parameters are presented:
– In the top window, measured End
Inspiratory Pressure (EIP) and Positive
End Expiratory Pressure (PEEP) are
simultaneously presented, breath-by-
breath.
– In the middle window, measured
Inspiratory tidal volume (VTi) and
Expiratory tidal volume (VTe) are
simultaneously presented, breath-by-
breath.
– Dynamic compliance (C dyn i) is
calculated breath-by-breath and filtered
before presentation. (C dyn i = VTi / EIP –
PEEP)
– In the lower window measured Tidal CO
2
elimination (VTCO
2
) is simultaneously
presented as well, breath-by-breath
( CO
2
Analyzer).
– The time parameter on the lower right
screen indicates how long it will take at
the current settings for the waveform to
fill the axis. Changing the scaling with
the zoom in or out function will change
the time and number of breaths needed
for filling the axis.
– The breaths parameter on the lower right
screen indicates the number of breaths
at the current respiratory rate it will take
for the waveform to fill the axis.
SVX-9023_XX
Open Lung Tool