1 Author Affiliations: Duke University Nurse Anesthesia Program, Duke University School of Nursing (Drs Brown and Simmons), Anesthesia Department, Duke University School of Nursing and Duke University Health System (Dr Tola), Duke Cancer Institute, Duke University Health System and Duke University School of Nursing (Dr Allen), Durham, North Carolina; Duke Raleigh Hospital (Dr Hicks), Raleigh, North Carolina; and Duke Regional Hospital (Dr Hicks), Durham, North Carolina.