CompletedNot Applicable

Comparison of Two Electroencephalogram (EEG)-Derived Indices With Electroencephalogram Signals

Finland65 participantsStarted 2009-12

Plain-language summary

Bispectral Index (BIS) and Entropy indices will be compared with each other, and to raw EEG signals in patients receiving sevoflurane anaesthesia. BIS and Entropy numbers often differ significantly from each other during surgery, and the reason for this has not been studied in detail, therefore remaining only poorly understood. BIS and Entropy, together with multi-channel EEG, will be collected and analyzed later on. Course of anaesthesia and surgery will be annotated. All relevant information from anaesthesia monitor will be collected on computer.

Who can participate

Age range50 Years

SexALL

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AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * Planned surgery necessitating general anaesthesia * Expected duration of anaesthesia 30 min or more * Need of endotracheal intubation * ASA status 1, 2 or 3 Exclusion Criteria: * Significant disorders of the autonomic or central nervous system * Family history of malignant hyperthermia * Clinical history of anaphylactic reaction against inhaled anaesthetics * Disability to communicate with Finnish language

What they're measuring

Morphology of electroencephalogram during discrepancy between Entropy and BIS index values

Timeframe: 15 minutes

Trial details

NCT IDNCT01077674

SponsorArvi Yli-Hankala

Sponsor typeOTHER

Study typeOBSERVATIONAL

Primary completion2011-03

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