Abstract: A system adapted to provide a flow of gas to an airway of a patient. The system comprises a first conduit, a second conduit, an interface appliance, and a retention assembly. The first conduit has a proximal end and a distal end. The second conduit has a proximal end and a distal end. The interface appliance has an inlet opening, an outlet opening, and one or more airway openings. The inlet opening is engaged with the proximal end of the first conduit such that the flow of gas is provided from the first conduit to the interface appliance at the engagement between the inlet opening and the proximal end of the first conduit. The one or more airway openings are adapted to deliver a portion of the flow of gas to the airway of the patient. The outlet opening is engaged with the proximal end of the second conduit such that a portion of the flow of gas is released from the interface appliance into the second conduit at the engagement between the outlet opening and the proximal end of the second conduit.