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Inspiratory resistance
It is the parameter of the lung mechanics that describes the
resistance to the opposite flow of the airways: measured in
cmH
O/(l/s). The greater the patient resistance, the higher the
2
airway pressure you need to apply to obtain the same volume.
The formula used by the ventilator to calculate the inspiratory
resistance is as follows:
Ri = (peak pressure – pause pressure) / inspired flow.
Expiratory time
It shows the duration of the patient's expiratory phase: the unit of
measurement is the second. This parameter defines the expiration
duration. This value depends on the respiratory rate and I:E ratio
parameters.
Example: if RATE = 15 and I:E=1:1 you will have an expiratory
phase of 2 seconds.
Inspiratory time
It shows the duration of the patient's inspiratory phase: the unit of
measurement is the second. This value represents the total
inspiratory time, and also includes the inspiratory pause period. This
value depends on the respiratory rate and I:E ratio parameters.
For example: if RATE = 15 and I:E=1:1 you will have an inspiratory
phase of 2 seconds.
Inspiratory pause
It shows the duration of the patient's inspiratory standby phase: the
unit of measurement is the second. This parameter represents the
inspiratory time during which the lung ventilator keeps the airway
pressure constant.
Example: if RATE=15, I:E=1:1, Ppause=50% you will have an
inspiratory pause period of 1 second.
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User manual, DU3104101
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