Comparing signal concordance of needle electrodes and conventional bispectral index sensors in anesthesia monitoring: a prospective pilot study
Authors' conclusion
The raw EEG signal obtained with needle electrodes for processed EEG monitoring is comparable to that of conventional electrodes.
Study context
- Population
- Patients under GA for elective surgery3,447 BIS pairs analysed
- Participants
- 23 participants
- Exposure
- Needle electrodes vs conventional BIS sensor
- Outcome
- Agreement (Bland-Altman) and correlation of BIS values between needle electrodes and conventional sensor
Methodological detailsmethod-comparison (Bland-Altman)
- Method-comparison (Bland-Altman)
Main finding
As reported in the abstract
BIS agreement and correlation
R
0.912
95% CI 0.9057–0.9170
strong correlation
Mean difference
1.735
95% CI - 8.983 to 12.454
SD ± 5.469; interval is 95% limits of agreement
Observational data: associations, not effects.
Original publication
Comparing signal concordance of needle electrodes and conventional bispectral index sensors in anesthesia monitoring: a prospective pilot study. J Clin Monit Comput. Published 9 December 2025. doi:10.
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