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Critical Reviews™ in Biomedical Engineering
SJR: 0.207 SNIP: 0.376 CiteScore™: 0.79

ISSN Print: 0278-940X
ISSN Online: 1943-619X

Critical Reviews™ in Biomedical Engineering

DOI: 10.1615/CritRevBiomedEng.v30.i123.50
pages 85-97

Monitoring Approaches in General Anesthesia: A Survey

Lotfi Senhadji
INSERM, Laboratoire Traitement du Signal et de I'lmage, Universite de Rennes 1, Campus de Beaulieu, Rennes Cedex 35042, France
Eric Wodey
Service Anesthesie-Reanimation 2, Rennes, France
Claude Ecoffey
Service Anesthesie-Reanimation 2, Rennes, France


The aim of this article is to give an overview of recent developments in the field of general anesthesia monitoring. We measure different physiological signals related to the functioning of several nervous systems. Using statistical or signal processing methods, monitors are derived and correlated to the dosage of anesthetic agents and to the status of the patient. Comparisons among existing monitors show that there is no one universal monitor applicable to all general anesthesia—each has its own characteristics and might be useful in particular clinical situations. Modeling of the underlying physiological mechanisms of the anesthesia may help for better understanding the interactions between anesthetic agents and nervous systems. Physiological-model-based general anesthesia monitoring and control can then be considered and optimized for each patient.