Alarms and Safety Mechanisms
The device has an alarm system with simultaneous messages to alert conditions that, if they
persist, they put or they can put in danger the patient's state and could require immediate
attention.
The safety mechanisms are referred to intrinsic functions of the device and comprise to
assigned program limits of each ventilatory parameter and some automatic operative actions.
Alarms
All the alarms have visual and audible signals, and are accompanied by a message on the
screen indicating the name of the alarm activated, and the possible cause and some
suggested solution. The alarms have activation priority and follow an order in accordance
with that priority. This means that if there are two or more events taking place
simultaneously, all the LED’s corresponding to those alarms is lit, but the message on the
screen is that of the alarm with a higher hierarchy. In all cases, the High Inspiratory Pressure
Alarm is considered the one with highest priority.
Some alarms have programmable values (high and/or low limits of pressures, volumes, rate),
other are automatically activated after an elapsed time. While the device remains functioning,
all the alarm events are recorded in memory and they appear in the screen of Activated
Alarms with date and hour in a maximum sequence of 50 lines.
The signals of alarm are grouped in three categories:
1) High Priority
2) Medium Priority
3) Low Priority
High Priority Signals (urgency)
They are those that require of an immediate action. They are characterized to be
activated in instantaneous form.
The alarms that are activated with signals of High Priority are the following ones:
High inspiratory pressure (Adjustable by the user)
Definition: Maximum allowed airway pressure limit.
Selection: In all the ventilatory modes.
Ventilator action:
1) Immediately activated when the inspiratory pressure reaches the set limit.
2) Immediate opening of the expiratory valve with breathing circuit decompression
to PEEP level.
Signal type: Audible, visual and warn in the screen.
Silence: It can be silenced temporarily.
Setting limits: From 10 to 120 cm H
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Default value: According to patient category:
ADL: 40 cm H
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PED: 30 cm H
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NEO: 25 cm H
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