title: The role and limitations of EEG-based depth of anaesthesia monitoring in theatres and intensive care.
abstract: In this article we will look at some of the principles in processed EEG monitoring as applied to bispectral index (BIS). We outline why BIS should be regarded as a 'memory' monitor which in most circumstances reflects the depth of sedation or anaesthesia in particular patients. Its limitation in paralysed and non-paralysed patients must be understood in order for this monitor to be used safely. Finally, its emerging use in critical care will be explored.
authors.affiliation: Sheffield Teaching Hospitals NHS Trust, Sheffield, UK.
authors.forename: Z
authors.initials: Z
authors.lastname: Hajat
authors.affiliation: Sheffield Teaching Hospitals NHS Trust, Sheffield, UK.
authors.forename: N
authors.initials: N
authors.lastname: Ahmad
authors.affiliation: Sheffield Teaching Hospitals NHS Trust, Sheffield, UK.
authors.forename: J
authors.initials: J
authors.lastname: Andrzejowski
mesh_terms: D000758:Anesthesia; D016292:Procedural Sedation; D056805:Consciousness Monitors; D003422:Critical Care; D004569:Electroencephalography; D006801:Humans; D058926:Intraoperative Awareness; D008991:Monitoring, Physiologic; D019148:Neuromuscular Blockade
keywords: accidental awareness; anaesthetic monitoring; factors affecting anaesthetic depth; processed EEG; sedation in Intensive care