11. Perform Operational Test - ZOLL AEV Operator's Manual

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11. Perform Operational Test

Before attaching the patient to the ventilator, you must perform an Operational Test to ensure
that the breathing circuit is properly attached and that the primary patient safety alarms, such as
PATIENT DISCONNECT and AIRWAY PRESSURE HIGH are functioning properly.
Operational Test Procedure
Press the MANUAL BREATH button; gas should flow out of the patient connection each time
the button is pressed.
The minimum period between manual breaths is limited by the tidal volume and the time
required to complete a full exhalation based on the I:E ratio.)
Close the patient port with a gloved hand. During inspiratory phase, the HIGH AIRWAY
PRESSURE LIMIT alarm should activate after 2 breaths that reach the PIP High Limit.
If the AIRWAY PRESSURE HIGH alarm fails to activate, ensure that all of the tubing
connections are secure, the exhalation valve is closing during inhalation, and that the High
Airway Pressure Limit is set to 35 cm H2O or less.
After a breath or two, release the patient port while allowing the ventilator to operate. The
PATIENT DISCONNECT alarm should activate.
Partially close the patient port to reset the PATIENT DISCONNECT alarm. With no other
alarms occurring, remove external power from the ventilator. The EXTERNAL POWER
LOW/DISCONNECT alarms should activate. Reconnect external power to reset alarms.
If either the HIGH AIRWAY PRESSURE, PATIENT DISCONNECT, or EXTERNAL POWER
LOW/DISCONNECT alarms fail to activate, continue to manually ventilate the patient, replace
the ventilator, and send the unit in for service.
If operating using the internal battery, verify that the Battery icon indicates sufficient available
battery capacity remains to support the anticipated duration of operation. If not, begin
ventilation and find an alternate source of power.
The trigger automatically adjusts when the PEEP is changed.
Until you have determined that the ventilator is functioning properly and that the ventilator
parameters are set correctly for the patient, do not connect the patient to the ventilator.
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