Evoked potentials (EPs), the electrophysiologic responses of the nervous system to stimulation, permit monitoring of the functional integrity of neurologic pathways when clinical monitoring is hampered by general anesthesia or coma. Intraoperative EP monitoring is now commonplace in many medical centers throughout the world. To use these techniques to best advantage, one must appreciate several important principles. This paper reviews key concepts in monitoring and describes key criteria for assessing EPs as monitors in the operating room. In conclusion, guidelines for avoiding “false positives” and “false negatives” are outlined.
Unable to display preview. Download preview PDF.
- 1.Beecher HK (1940) The first anesthesia records (Codman, Cushing). Surg Gynecol Obstet 71: 689Google Scholar
- 2.Bendixen HH (1978) A forward: the tasks of the anesthesiologist. In: Saidman LJ, Smith NT (eds) Monitoring in anesthesia. Wiley, New York, pp 227–267Google Scholar
- 3.MacEwen GD, Bunnell WP, Sriram K (1975) Acute neurological complications in the treatment of scoliosis: a report of the Scoliosis Research Society. J Bone Joint Surg 57 A: 404Google Scholar
- 10.Gravenstein MA, Sasse F, Hogan K (1984) Effects of stimulus rate and halothane dose on canine far-field evoked potentials. Anesthesiology 61: A 342Google Scholar