Comparison Study Using APAP With and Without SensAwake in Patients With OSA and PTSD

Conceptually, awareness of pressure occurs only during wakefulness. Thus reducing the pressure during wakefulness may improve therapy comfort and potentially adherence without compromising therapy efficacy. SensAwake™ is a unique pressure relief technology developed by Fisher \& Paykel Healthcare which detects irregularity in the flow signal indicative of the transition from sleep to wake. When the transition from sleep to wake is detected the device promptly reduces the pressure to help facilitate a return to sleep. It is hypothesised that AutoCPAP with SensAwake will improve patient comfort and compliance in the PTSD and OSA patients who are naïve to CPAP therapy. The investigators will not be blinded to the study. The participants will be blinded to the study.