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# VENTILATOR ALARM SETTINGS **General Information** Although different ventilators have different alarm systems, the following alarms should be basic to any ventilator: - low exhaled volume alarm - low inspiratory pressure alarm - high inspiratory pressure alarm - apnea alarm - high frequency alar...

# VENTILATOR ALARM SETTINGS **General Information** Although different ventilators have different alarm systems, the following alarms should be basic to any ventilator: - low exhaled volume alarm - low inspiratory pressure alarm - high inspiratory pressure alarm - apnea alarm - high frequency alarm - F₁O₂ alarm These alarms should be backed up by a battery source to prevent malfunction in the event of electrical failure. **Low Exhaled Volume Alarm** The low exhaled volume alarm (low volume alarm) should be set at about 100 mL lower than the expired mechanical tidal volume. This alarm is triggered if the patient does not exhale an adequate tidal volume. This alarm is typically used to detect a system leak or circuit disconnection. **Low Inspiratory Pressure Alarm** The low inspiratory pressure alarm (low pressure alarm) should be set at 10 to 15 cm H₂O below the observed peak inspiratory pressure. This alarm is triggered if the peak inspiratory pressure is less than the alarm setting. The low inspiratory pressure alarm complements the low exhaled volume alarm and is also used to detect system leaks or circuit disconnections. **High Inspiratory Pressure Alarm** The high inspiratory pressure alarm (high pressure limit alarm) should be set at 10 to 15 cm H₂O above the observed peak inspiratory pressure. This alarm is triggered when the peak inspiratory pressure is equal to or higher than the high limit.