Occipital Monitoring of Patient State Index During Frontal Tumor Resection: A Feasibility Study

Le résumé fourni par la source

BACKGROUND: Frontal patient state index (PSI) monitoring is impractical during frontal lobe tumor resection due to surgical field interference. No validated alternative monitoring positions exist currently. This study evaluated the agreement between standard frontal and experimental occipital PSI monitoring. METHODS: A SedLine sedation monitor was used to record frontal and occipital PSI values in 16 patients who underwent frontal lobe tumor resection. PSI data were collected at 2-second intervals starting from sensor attachment to headframe fixation. Agreement was assessed using the Bland-Altman analysis and intraclass correlation coefficient. Subgroup analyses evaluated tumor laterality. A Passing-Bablok regression established predictive equations between frontal and occipital PSI at 7 critical time points. RESULTS: . CONCLUSIONS: Occipital PSI demonstrates excellent agreement with frontal PSI during frontal tumor resection, offering a viable alternative to obstructed frontal monitoring. Prospective validation via multi-center continuous intraoperative monitoring constitutes the essential next step.

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