Alberta E-Vent User Manual Version 1.3 June 3, 2020
21
Chapter 8:
Alarms and Indicators
8.1.
Status Indicators
The Alberta E-Vent displays the following status
indicators
▪
PIP High Limit
▪
PIP Low Limit
▪
PEEP High Limit
▪
PEEP Low Limit
▪
Respiratory Rate Limit
▪
Mechanism Fail
▪
Calibration Fail
8.2.
AC Power loss and Power off Alarm
A continuous tone alarm sounds when AC power is
lost. This alarm can be silenced by holding down the
Alarm Silence button for 5 seconds. The alarm will
continue for approximately 10 minutes if it is not
silenced.
8.3.
Alarm Silence
The alarm silence button only silences the alarm
tone for the current alarm for 2 minutes; the red LED
will continue to remain lit as long as the alarm
condition persists. A new alarm that occurs during
the alarm silence period will reactivate the audible
tone. If multiple alarms are active, they will be
visually displayed with LCD and remote display. The
condition that has triggered the alarm will have a
filled black box next to it on the LCD Display.
8.4.
Alarm Reset
Alarm is automatically reset once the condition that
triggered the alarm is resolved.
8.5.
Alarm Summary
Following sections provides an alarm summary in the
order of priority.
8.5.1.
Mechanical Failure
Causes:
Commanded motor position does not match
feedback; Mechanical disconnection
Consequences:
Device re-calibrates/locks out, shuts down (requires
power down and power up); No ventilation
Responses/Actions:
▪
Clinician disconnects patient and begins
manual ventilation
▪
Manually power down the device and restart,
it will re-calibrate and continue ventilation on
power cycle boot up using the Default settings
8.5.2.
Calibration Failure
Causes:
After mechanism failure, Calibration attempt failed;
Calibration failure upon start up; Switch malfunction
Consequences:
Clinician corrects situation; Restarts device
Responses/Actions:
▪
Emergency Alarm
▪
Attempt to Re-calibrate
-
If Re-calibration Fails again, all stop;
"CALIBRATION FAIL";
-
If Re-calibration is successful, continue
operation.
8.5.3.
High PIP
Causes:
Obstruction in patient circuit; Obstruction in patient
airways; Cough; Deterioration of patient status
Consequences:
Exceeding High Alarm causes risk of barotrauma
(lung damage)
Responses/Actions:
Mechanism will immediately stop BVM compression,
open completely, resume normal operation at start
of next breathing cycle
Clearing Condition:
Auto reset with two complete breathing cycles with
no over pressure
Default:
Range:
40 cmH2O
10-70 cmH2O
