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6.9 Ventilation Parameters
WARNING
As required by the relevant rules and regulations, oxygen concentration shall be
monitored when the equipment is used on the patient. If your ventilator is not
configured with such monitoring function or this function is switched off, use a
monitor which complies with ISO 80601-2-55 for oxygen concentration monitoring.
NOTE
All the parameter values are calculated based on the real-time flow and pressure
waveform data. For real-time flow and pressure data, low pass filter is adopted at
original sampling rate of 1KHz and cutoff frequency of 20Hz.
Tidal volume, minute volume displayed on the ventilator and related calculation
parameters are in the BTPS condition.
Setting
parameter
Description
TV The gas volume the patient inspires or expires each time during resting breathing.
O
2
% The volume percentage of oxygen in the mixed gas delivered to the patient.
I:E The ratio between the inspiratory and expiratory time.
PEEP Positive end-expiratory pressure.
Phigh Phigh is the high pressure level at which the patient can spontaneously breathe
and is an absolute value.
ΔPinsp It is a relative value of the pressure, relative to PEEP.
Plow Plow is the low pressure level at which the patient can breathe spontaneously.
ΔPsupp Pressure support level in pressure control mode. It is a relative value relative to
PEEP or Plow.
Tslope Controls pressure rise slope in pressure mode.
Tpause(%) Percent of gas delivery pause time in inspiratory time within the inspiratory
phase.
MV% Used for calculating the patient's target minute volume Target minute volume is
equal to ideal minute volume * minute volume%
f The number of mechanically controlled breaths delivered to the patient in one
minute.
fsimv Mandatory breathing frequency set in SIMV mode.
Thigh
Thigh is the time that the ventilator will hold the high pressure level.
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