Inspiratory circuit became inadvertently disconnected during normal pt care.Disconnect was not noted until pt was in extremis.This was a high flow nasal cannula oxygen delivery system which had a device designed for the circuit which introduces neutralized medication.This device sits between the circuit and the patient nasal cannula.When the breathing circuit and the cannula are directly connected there is a locking mechanism, when the device for nebulized medication delivery is in place, there is no longer a locking mechanism.
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