The investigation was carried out based on the logfile of the reported date of event.It was found that only 3 events have been logged on the reported date of event: two entries have been logged when the device was switched on, at 07:16 am and at 02:16pm.The third entry is that a "m006 paw very neg" entry has been logged at 01:37pm.A "m006 paw very neg" is logged when the airway pressure (paw) has gone very negative (less than -10mbar) during a ventilator operating mode.The entry correlates with the reported time of event at 02:00 pm and is most likely related to the reported loss of pressure.A high priority "pressure negative" alarm is issued even before when the airway pressure (paw) drops below only -5 mbar.Therefore, the fabius in question must have issued at least one high priority "pressure negative" alarm.As reported in this specific case, the device generated according alarms.If the system has been losing pressure, the root cause is most likely a leakage in the system.On-site, the device passed all the test during inspection by the dräger service technician and no malfunction could be found.Therefore, the leak has most likely been at the breathing circuit that has been disposed after the case.Any leak above 250 ml/min within the breathing system will be identified and alarmed during the leak and compliance test of the pre use check.The device was returned to use after the testing with no further problems reported since then.
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