KPAP Adherence Crossover Study

A device able to provide less positive airway pressure (PAP) for the entire duration of inspiration and roughly half the duration of expiration, designated KPAP, is being developed by SleepRes for the treatment of obstructive sleep apnea (OSA). In prior studies, the administration of higher inspiratory than expiratory PAP did not substantially increase treatment efficacy or adherence to continuous PAP (CPAP), which remains low. In our recent investigation, we demonstrated that the addition of a resistor to the CPAP circuit to reduce inspiratory PAP increased subjective comfort. In another study, we showed that KPAP improved subjective comfort during wakefulness vs. fixed CPAP, while maintaining treatment efficacy. The present study, KPAP Adherence 1, is a randomized, crossover study designed to examine whether KPAP can improve adherence over APAP as an at home treatment for OSA.