The log file was available for investigation.On the reported date of event no entries are logged.But, some days before several entries are listed indicating vent fails, as reported.The device disabled automatic ventilation as a safety measure against a too high measured airway pressure and alarmed for ventilator fail !!!.In case the airway pressure recovers, the device continues automatic ventilation on its own.Due to limited information no root cause could be determined.As the issue could not be reproduced, an external impact is likely, as coughing by the patient or repositioning of patient.No hint for a device malfunction was found.In case automatic ventilation is shut down, manual ventilation and monitoring functions remain available.Restrictive issues will be detected during self test before use.
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