Monitoring depth of anesthesia: a comparision between electroencephalographic nonlinear index and bispectral index

To compare the efficiency and accuracy of electroencephalographic nonlinear index (ENI) and bispectral index (BIS) in monitoring depth of anesthesia during general anesthesia. Thirty patients undergoing elective abdominal surgery were recruited. The ability of ENI and BIS to distinguish between the...

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Published inSichuan da xue xue bao. Journal of Sichuan University. Yi xue ban Vol. 41; no. 1; p. 140
Main Authors Yu, Hai, Yang, Xiao-Yun, Zhu, Da, Du, Run-Zi, Yin, Yan, Zhou, Rong-Hua, Liu, Bin
Format Journal Article
LanguageChinese
Published China 01.01.2010
Subjects
Abdomen - surgery
Adolescent
Adult
Anesthesia, General
Consciousness - physiology
Electroencephalography - drug effects
Electroencephalography - methods
Female
Humans
Male
Middle Aged
Monitoring, Intraoperative - methods
Young Adult
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Summary:To compare the efficiency and accuracy of electroencephalographic nonlinear index (ENI) and bispectral index (BIS) in monitoring depth of anesthesia during general anesthesia. Thirty patients undergoing elective abdominal surgery were recruited. The ability of ENI and BIS to distinguish between the anesthetic states (awake, loss of eyelash reflex, loss of response, steady anesthesia, first reaction and extubation) was analyzed with prediction probability (Pk). Correlation between ENI and BIS was tested by nonparametric Spearman rank correlation analysis, with data paired from awake through to extubation. The clinical performances of ENI and BIS were evaluated with success rate, responsiveness, and recovery time. ENI and BIS were better than mean arterial pressure (MAP) and heart rate (HR) for distinguishing between the states of anesthesia. ENI correlated strongly with BIS from the stage of awake through to extubation (r = 0.93). No differences were found between ENI and BIS in success rate and responsiveness
ISSN:1672-173X