Feasibility of a Modified Positive Airway Pressure Device to Treat Sleep Disordered Breathing

Inclusion Criteria: * Aged 18+ * Patients diagnosed with obesity hypoventilation syndrome (OHS) and/or obstructive sleep apnea (OSA) by a practicing sleep or respiratory physician, requiring positive airway pressure (PAP) therapy Exclusion Criteria: * Recent cardiac or respiratory arrest * Gastro intestinal bleeding, ileus or recent gastrointestinal surgery * Coma, decreased level of consciousness or agitation * Anatomical or subjective difficulty with airway access e.g. facial surgery, trauma, vomiting upper airway obstruction * Cerebrospinal fluid leak, abnormalities of the cribiform plate or prior history of head trauma.