It was reported that the evita 4 ventilator displayed error messages in the pressure measurement and peep (measured value 16mbar) high.After the peep high alarm was triggered, the peep immediately dropped to the set value and increased again per ventilation stroke.The alarm behavior corresponds to the increment defined by the manufacturer for the peep high alarm of 8mbar.The patient became short of breath (dyspnoea) due to the increased peep of up to 16 mbar.Due to the dyspnea and forced inspiration of the patient, a pneumothorax occurred.The device has alarmed.At the present time, we can not exclude a device malfunction or user error that led to the reported event.
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