This study will explore the feasibility of an idea to use standard, FDA-approved patient monitors to detect ventilatory depression and then play a recorded nurse's voice to prompt patients by name to breathe. The voice prompt will occur in addition to when the traditional alarms are sounded by the monitors. The study device consists of commercially available physiologic monitors, a speaker, and a laptop computer. The physiologic monitors include a pulse oximeter with a motion sensor, capnometer, and nasal airway pressure sensor (built into a nasal cannula). Nasal pressure is a commonly used clinical monitor for sleep apnea detection during polysomnography testing in sleep labs.
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Oxygen saturation measured by pulse oximetry (SpO2)
Timeframe: Average and median SpO2 will be measured every 10 minutes for approximately the first 24 hours after surgery during the patient's stay
Breath promoting success rate
Timeframe: Change in respiratory rate from baseline to the period 10 seconds after the breath prompt every 10 minutes for approximately the first 24 hours after surgery during the patient's stay