Bilevel positive airway pressure (BiPAP) provides different pressures for inhale and exhale

https://www.slideserve.com/nuallaqqkj/sleep-apnea-oral-appliance-care-maintenance-tips-for-better-results

Bilevel positive airway pressure (BiPAP) provides different pressures for inhale and exhale, helpful for high-pressure needs or concurrent hypoventilation.