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milliseconds, this parameter is calculated.
- If a patient is making respiratory effort during the
measurement cycle especially pause time it may cause
erroneous measurement of lung compliance.
- Fault of pressure and flow sensors may result in
erroneous measurement of this parameter.
- The system leakage could result in invalid parameter
value.
Dynamic compliance of lung
This parameter measures compliance of lung tissue as well
as alterations in airway resistance, includes all mandatory
C
and supported breaths.
dyn
The system leakage could result in invalid parameter
value.
This parameter is calculated and updated in each breath.
Inspiratory flow resistance
This parameter is measured when the ventilator is in the
following conditions:
- Volume mode
- Square wave pattern
- Pause ≥ 200 ms
R
insp
If above conditions are not provided, R
not be measured even if Insp. Hold maneuver is applied.
The system leakage could result in invalid parameter
value.
This parameter is calculated and updated in each breath.
Expiratory flow resistance
This parameter is measured in the following conditions:
- Volume mode
- Pause ≥ 200 ms
R
exp
If above conditions are not provided, R
not be measured even if Insp. Hold maneuver is applied.
This parameter iscalculated and updated in each breath.
Auto PEEP occurs when expiratory time is inadequate.
Factors leading to auto PEEP are high respiratory rate,
Auto PEEP
high minute ventilation, airway closure and inverse ratio
I:E ventilation. When exhalation time is short, the lungs
parameter will
insp
parameter will
exp
ml/cmH
O
2
cmH
O/l/Sec
2
cmH
O/l/Sec
2
cmH
O
2
88
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