ResMed Elisee 350, Clinical Manual

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15/102 Ventilation
NOT013281-8
3 Ventilation
3.1 Ventilation parameters
Pressure Support and Inspiratory Pressure Pi (cm H
2
O)
Pressure support is the pressure delivered by the ventilator in addition to the target PEEP during
inspiratory phases in Pressure Support mode (PS on the graph below). In P(A)CV mode, the
pressure added during the inspiratory phase is known as inspiratory pressure, or Pi.
The total pressure corresponds:
•
To the sum total of PS + PEEP in Pressure Support mode
•
To the sum total of Pi + PEEP in the other pressure modes.
Positive End Expiratory Pressure PEEP (cm H
2
O)
The pressure supplied by the ventilator and maintained during exhalation.
Continuous pressure (cm H
2
O)
The pressure delivered to the patient (CPAP only).
Respiratory rate F (breaths per minute, bpm)
The number of breaths per minute, either delivered by the ventilator (controlled cycles) or initiated
by the patient with the help of the triggers (assisted or assisted-controlled cycles).
Insufflation time Ti (s)
The time during which the ventilator is delivering insufflation to the patient.
t
P
PEEP
PS
Total
pressure
Total
pressure
t
P
PEEP
Pi
Total
pressure
Total
pressure
t
P
PEEP
PS
Total
pressure
Total
pressure
Ti Te
P
V
t
t