The investigation of different masks for positive airway pressure therapy for Obstructive Sleep Apnea (OSA)

The interventions used in this clinical trial will be in the form of testing prototype masks on patients with obstructive sleep apnea. These masks may be any type - nasal, nasal pillows or full face. Up to 300 participants will be tested. Each mask will be provided to the patient to use either in-lab for one night or at home for up to 6 months at their prescribed CPAP pressure. This is to help with designing masks for OSA therapy that would be comfortable and easy to use for patients. The participants might be asked to test multiple masks at different timepoint, however wash-out period is not required as evaluating comfort and the ease of use are the main objectives. CPAP data will be downloaded to see the effectiveness of the trial mask in its treatment. Three different types of mask will be tested in this study - nasal, nasal pillows and full face. There may be iterations of each type of mask depending upon the feedback provided. A nasal mask provides positive pressure therapy to patient via the nose, with the mask fitting over the nose. A nasal pillows mask provides positive pressure therapy via the nose, with the mask fitting into the nares/nostrils. A full face mask provides positive pressure therapy via the nose and mouth, with the mask fitting over both. Participants are allocated to the same mask delivery that they are used to (i.e. nasal mask users will receive a prototype nasal mask, nasal pillows will receive a prototype nasal pillows, full face mask users will receive a prototype full face). Only one mask will be tested at a time – the comparison is to their usual/existing mask.