In recovery room patients will be started on morphine patient controlled analgesia (morphine PCA 0.5mg every 5 minutes while NPO, with ability to escalate the dose up to 1 mg every 5minutes per hospital PCA protocol if patient requires additional morphine rescue to control the pain, uses PCA appropriately and demonstrates no side effects). Patients will have antiemetics and morphine loading/rescue dose (4mg Q15minute max 16mg per PACU nurse discretion) per standard hospital protocol. Patients will be continuously monitored overnight per nursing protocol and in addition to that with Remmer's unit (pulse oximetry, respiratory effort, respiratory flow, airway pressure). Pain score at rest and with cough and nausea/vomiting will be assessed periodically and will be reported by patient in the postoperative diary. Pain scores will be integrated separately over 24 hours to obtain area under curve at rest (AUCr) and with cough or activity (AUCa) Overnight oximetry recordings will be analyzed post hoc to determine RDI. Patients with PCA will be monitored per hospital policy (Q1h x 12h, then Q2hx 12h). All bariatric patients are continuously monitored overnight in the PACU or surgical step-down unit. Nurses taking care of the patient routinely notify anesthesia and/or surgical team about significant apnea/hypopnea.