The Effect of Hyperoxia on Ventilation During Recovery From General Anesthesia

This study is investigating whether breathing high concentrations of oxygen (called hyperoxia) affects breathing patterns when patients are waking up from general anesthesia after surgery — specifically robotic kidney or prostate surgery. **You may be eligible if...** - You are scheduled for robotic-assisted kidney removal (nephrectomy) or prostate removal (prostatectomy) - Your overall health status is classified as ASA I–III (generally healthy to having mild-moderate controlled conditions) - Your BMI is under 40 **You may NOT be eligible if...** - You have COPD (chronic obstructive pulmonary disease) or severe heart, brain, or thyroid conditions - You use opioid pain medications for a chronic pain condition - You lost significant amounts of blood during surgery or required a blood transfusion Talk to your doctor to see if this trial is right for you.