Increases in electroencephalogram and electromyogram variability are associated with an increased incidence of intraoperative somatic response

Anesthesia and Analgesia
D M MathewsChandran V Seshagiri

Abstract

sBIS, the variability of the Bispectral Index (BIS), sEMG, the variability of facial electromyogram power (EMG), and the Composite Variability Index (CVI) are 3 new measures of electroencephalogram and EMG variability. CVI is a single measure of the combined variability in BIS and EMG. We investigated whether increases in these variables are associated with intraoperative somatic responses. This multicenter study included 120 patients undergoing elective, noncardiac surgery from 4 different sites. General anesthesia was maintained using propofol and remifentanil at 2 of the sites and sevoflurane and remifentanil at the 2 other sites. Propofol or sevoflurane was adjusted to maintain BIS between 45 and 60. Clinicians were blinded to CVI (v2.0) at all times, and remifentanil infusions were adjusted at the discretion of the clinician. The times of all intraoperative somatic events, defined as movement, grimacing, or eye opening, were recorded. Offline, the maintenance phase of each case was divided into consecutive, nonoverlapping, 10-minute segments. Segments were identified as containing a somatic event or containing no events. For each segment, mean sBIS, sEMG, and CVI and the heart rate (HR) range and mean arterial blood pressu...Continue Reading

References

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Citations

Apr 26, 2014·Canadian Journal of Anaesthesia = Journal Canadien D'anesthésie·Silvia Perez-ProttoDaniel I Sessler
Sep 10, 2013·Best Practice & Research. Clinical Anaesthesiology·Matthias Gruenewald, Christoph Ilies
Nov 22, 2012·Acta Anaesthesiologica Scandinavica·H StormJ Raeder
Mar 17, 2015·Anaesthesia·R CowenC Bantel
Nov 21, 2014·Paediatric Anaesthesia·Isabelle Constant, Nada Sabourdin
Apr 6, 2016·IEEE Transactions on Bio-medical Engineering·Yu-Ting Lin, Hau-Tieng Wu
Jan 15, 2014·Clinical EEG and Neuroscience·Nicolas MarchantVincent Bonhomme
Dec 7, 2017·Anesthesia and Analgesia·Nicholas WestRichard N Merchant
Nov 7, 2019·Canadian Journal of Anaesthesia = Journal Canadien D'anesthésie·Matthias GörgesRichard N Merchant
Jul 22, 2014·Anesthesia and Analgesia·Jamie W Sleigh, Robert D Sanders
Dec 18, 2012·Anesthesiology·George A Mashour
Jan 5, 2019·Journal of Clinical Monitoring and Computing·Kazuko Hayashi, Teiji Sawa
Aug 24, 2021·Der Anaesthesist·Rainer NitzschkeSandra Funcke

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