Dräger Evita 4 - Aprv

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Operation
Setting Ventilation Modes
APRV
Airway Pressure Release Ventilation
Free spontaneous breathing at a raised CPAP pressure
level together with a short period of low pressure
(Release).
This mode is intended for patients who are breathing
spontaneously but who need assistance with CO2
removal.
Set the pattern of ventilation for APRV with the ventilation
parameters:
Inspiration time »Thigh«
Expiration time »Tlow«
Inspiration pressure »Phigh«
Positive end-expiratory pressure »Plow«
O2-concentration »O2«
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To set:
● Touch the appropriate screen knob.
● Adjust to the desired value = turn rotary knob.
● Confirm setting = press the rotary knob.
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APRV can be expanded with the following ventilation
parameters:
Apnoea Ventilation – for automatic switch-over to
volume-controlled mandatory ventilation if the patient
stops breathing.
If breathing stops, Evita 4 emits an alarm after the set
alarm time (TApnoea > ) and starts volume-controlled
ventilation with the set ventilation parameters:
Frequency »fApnoea«
Tidal volume: »VTApnoea«
Paw
Flow
P
high
Plow
Thigh
T
low
t
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