It was reported that a successful leakage test was performed before the case start but in some way, the breathing circuit after the test had been incorrectly connected.There are clinical alarms that are likely to have been caused by the inspiratory limb being connected to the afgo outlet instead of the patient cassette.There are no recordings in the technical log which suggests that there were any device malfunctions during the event.The connections to the inspiratory outlet, expiratory inlet and the afgo port on the anesthesia workstation are clearly marked with text and symbols to show where to connect the breathing circuit tubes.The different symbols are also described in the user¿s manual.This failure will be detected during system checkout if the breathing circuit tubes are incorrectly connected during the test.Our conclusion is that the cause of the reported issue was user error.
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