The electronic device log was analyzed.On the reported date of event (b)(6) 2019 the device was powered on at 6:13am.After elimination of a leakage at the mv2 valve the post was passed at 6:29am.The case in question was started at 9:26am using man/spont and was continued in volume mode from 9:36am.Until approximately 10:00am ventilation was unremarkable and stable.In the following minute leaks up to 5.2 l/min were detected, indicating an external leakage in the patient circuit.Consequently a fresh gas deficit arose and several "fg low or leak", "apnea", "mv low" and "volume not attained" alarms were posted.The user switched several times between manual and automatic ventilation while the fresh gas deficit remained present.At 10:18am the unit was placed in standby.Finally based on the available device log records no indications for a product malfunction were found.The ventilator was functional during the whole case and was able to apply volume at any time.Root cause for the reported symptom was a significant leakage in the patient circuit (hose, connector, tube etc.) leading to a loss of pressure and volume and in consequence to a fresh gas deficit.The device has reacted as specified for the detected situation by posting corresponding alarms to inform the user.
|