The affected breathing circuits were requested but were not available for investigation as they had already been disposed by the hospital.Therefore, a root cause analysis was not possible.A loose connection is obvious during preparation for use.Since all connections must be checked for fixed fit and tightness according to the instructions for use, a possibly too loose connection is reliably detected in this frame.A potentially loose angle connector can be firmly connected to the y-piece by re-inserting it.If a loose connection leads to a leakage that cannot be compensated by the connected main unit, this is detected during the pre-use test or during ventilation and is alerted accordingly.Although it was not possible to determine the root cause of the present case, there are cases with a comparable error pattern, the number of which, however, is within the expected range of the respective risk assessment and thus accepted.
|