Update for nurse anesthetists--Part 1--The cerebral oximeter: what is the efficacy?

Patients having surgical procedures are at risk for anoxia that may cause cognitive impairment. Continuous monitoring of cerebral oxygenation and perfusion with an instrument such as a cerebral oximeter is desirable. The data it provides give insight into the cause of the cerebral insults along with the cerebral response to specific interventions, all of which could help prevent damage to the brain. This critical review of the literature on the efficacy, mechanics, and usefulness of the cerebral oximeter will be helpful to anesthesia providers in evaluating the controversy surrounding its use. A comprehensive understanding of the factors involved in cerebral perfusion and available equipment, such as the cerebral oximeter to monitor cerebral oxygenation, allows anesthetists to provide the best protection for the brain.