Evaluation of Non-Invasive Respiratory Volume Monitor

This observational study investigates the validity and utility of a new, non-significant risk, FDA approved respiratory monitor, ExSpiron, in the perioperative course of patients undergoing elective surgery under general anesthesia. The study patients will be monitored before, during and after surgery, in post-anaesthesia care unit (PACU) and recovery room for the first post-operative night. The physiologic data will not be used or influence the standard of care for subjects. It is anticipated that this monitor may be able to improve perioperative care in the future.