iVent201 Operator's Manual
279
F.2.2 Respiratory Time Constant
Lastly the ventilator will calculate the time constant of the respiratory
system as the product of the dynamic resistance and the static compliance
of the respiratory system as calculated using the above technique.
These calculated values can be viewed in the “respiratory mechanics”
screen that is described in section F.3.2 Reviewing Static Mechanics and
Intrinsic PEEP Measurements.
F.2.3 Performing a Static Respiratory Mechanics
Measurement
In order to execute a static hold maneuver, the clinician must press the
“hold” button once on the front panel of the ventilator. This will initiate in
the next breath cycle an automated sequence in which the ventilator will
wait until the end of inspiratory flow and then hold the exhalation valve
closed until a plateau pressure is reached.
You will see the following on the screen of the ventilator:
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