Management of anesthesia: All patients will undergo a standardized anesthetic according to the Study Checklist (Appendix 2) that will be completed as soon as the patient is enrolled in the study. The Study Checklist will accompany the anesthetic record and the patient to the OR. This Study Checklist will form the basis for the dosing of all the medications for the anesthetic and the order the protocol is to be completed in. The drugs that are variable in their dosing will include: propofol (will be given to the desired effect at anesthesia induction); rocuronium (will be given to the desired effect of muscle relaxation); and desflurane (will be titrated to a BIS reading of 40 to ensure adequate anesthetic depth). If needed, morphine will be available to the attending anesthesiologist should the patient demonstrate clinical signs of inadequate analgesia during the anesthetic.