*Professor and Chairman, Department of Anesthesiology, University of Colorado Health Sciences Center. Departments of Anesthesiology, Duke University Medical Center, Durham, North Carolina, and University of Colorado Health Sciences Center, Denver, Colorado.
†Associate Professor, Department of Anesthesiology, Duke University. Departments of Anesthesiology, Duke University Medical Center, Durham, North Carolina, and University of Colorado Health Sciences Center, Denver, Colorado.
‡Resident, Department of Anesthesiology, Duke University. Departments of Anesthesiology, Duke University Medical Center, Durham, North Carolina, and University of Colorado Health Sciences Center, Denver, Colorado.
Reprint requests to Dr. Bromage, Department of Anesthesiology, University of Colorado Health Sciences Center, 4200 East Ninth Avenue, Denver, CO 80262.
Supported by a grant from A. H. Robins Company.
Accepted for publication February 3, 1982.
