BACKGROUND Manufacturers recommend maintaining anaesthesia at a bispectral index (BIS) or state entropy (SE) index value between 40 and 60. METHODS We prospectively studied 102 patients receiving propofol-sufentanil anaesthesia administered by anaesthetists blinded to these indices. The main endpoint was crude agreement (P(0)), defined as the proportion of agreement between BIS and SE index a...

BACKGROUND AND OBJECTIVES EEG-derived bispectral index (BIS), has been indicated as a major substrate for measuring hypnotic effects of anesthetic drugs. However, there are only limited data on the use of EEG in anesthetized children. This study aimed at evaluating changes in BIS, SEF95%, relative delta band frequency amplitude (d%) and suppression rate (SR) in children, correlating these chang...

Bispectral index (BIS) monitoring is commonly used to provide a measure of depth during general anaesthesia in attempt to reduce the rare occurrence of awareness [1,2]. The Bispectral Index is a generated number between 0 and 100 that is derived through utilization of a number of advanced EEG signal processing techniques including bispectral analysis, power spectral analysis, and time domain an...

BACKGROUND The patient state index (PSI) and the bispectral index (BIS) quantify anaesthetic depth based on the EEG using different algorithms. We compared both indices with regard to the prediction of the depth of propofol anaesthesia. METHODS In 17 patients, propofol was infused until burst suppression occurred and stopped thereafter until BIS recovered to values above 60. This was repeated...

We report a case of a 42-year-old male who developed generalized tonic-clonic seizure with sudden, brief decrease in bispectral index (BIS) value while undergoing emergency kidney transplantation. Few reports have been made on intraoperative pitfall of BIS value associated with seizure. This case report suggests seizure should be taken into account as a reason for such brief fall of BIS, especi...