A user interface for a portable continuous positive airway pressure (CPAP) devicecomprises a gas delivery member releasably mountable to a manifold member. TheCPAP device comprises a motor blower unit contained in a wearable vest which isconnectable by a patient hose to the user interface. Alternative embodimentsof the gas delivery member include a nasal mask or a pair of nasal prongs which areinterchangeably mountable to the manifold member. Ball joints on opposing endsof the patient hose swivelably interconnect the patient hose to the user interfaceand to the motor blower unit. Cheek pads extend from opposing ends of the manifoldmember and are freely orientatable relative thereto. Six-way adjustable headgear stabilizes the user interface on the patient's face and comprisesside straps and head straps which are pivotably joined to one another and whichare adjustable lengthwise to fit a wide range of patients.
