It was reported that the device ceased to ventilate during a surgical procedure.Reportedly the users introduced a replacement device and mentioned explicitly that no consequences to the patient have occurred.Dräger asked for further information but there was however none provided.Evaluation and assessment had to be done based on the initial description.The failure mode cannot be understood due to lack of information.In fact, it can even not be confirmed that a device problem has occurred - the presence of a large leakage in the patient circuit outside the device may also result in a significant decrease of gas flow at the patient opening and may lead to the perception that the device stopped to ventilate.The fabius tiro is equipped with integrated pressure-, volume- and o2-monitoring.A dedicated alarm will be generated if one measured value is out of adjusted alarm limits (insp pres not reach !!, apnea pressure !!!, apnea flow !!! etc.).Furthermore, patient gas monitoring is mandatory for anesthetic procedures allowing a constant overview of the gas exchange and efficacy of anesthesia.
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