CPAP in Patients With Severe Obesity After Anesthesia

Participant will receive a recruitment maneuver followed by CPAP set to the level of end-expiratory esophageal pressure (measured during atmospheric pressure breathing). The intervention will last for 20 minutes.

Participant will receive their home CPAP (if on CPAP at home) or CPAP at 8-10 cmH20 (if not on CPAP at home or no known diagnosis of OSA). The intervention will last for 20 minutes.

Participant will breathe at atmosphere pressure (no CPAP) with supplemental oxygen as needed per clinical guidance.