Processed electroencephalography: impact of patient age and surgical position on intraoperative processed electroencephalogram monitoring of burst-suppression

Autor: S Tabatabai, L H Ashbrook, L Zhang, Jacqueline M. Leung, D Tran, D Pleasants, Christopher J. Tang, Rochelle S. Zak, M Wang
Rok vydání: 2021
Předmět:
Zdroj: Journal of Clinical Monitoring and Computing. 36:1099-1107
ISSN: 1573-2614
1387-1307
Popis: We previously reported that processed EEG underestimated the amount of burst suppression compared to off-line visual analysis. We performed a follow-up study to evaluate the reasons for the discordance. Forty-five patients were monitored intraoperatively with processed EEG. A computer algorithm was used to convert the SedLine® (machine)-generated burst suppression ratio into a raw duration of burst suppression. The reference standard was a precise off-line measurement by two neurologists. We measured other potential variables that may affect machine accuracy such as age, surgery position, and EEG artifacts. Overall, the median duration of bust suppression for all study subjects was 15.4 min (Inter-quartile Range [IQR] = 1.0–20.1) for the machine vs. 16.1 min (IQR = 0.3–19.7) for the neurologists’ assessment; the 95% limits of agreement fall within − 4.86 to 5.04 s for individual 30-s epochs. EEG artifacts did not affect the concordance between the two methods. For patients in prone surgical position, the machine estimates had significantly lower overall sensitivity (0.86 vs. 0.97; p = 0.038) and significantly wider limits of agreement ([− 4.24, 3.82] seconds vs. [− 1.36, 1.13] seconds, p = 0.001) than patients in supine position. Machine readings for younger patients (age
Databáze: OpenAIRE
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