Efficacy of Bispectral Index-Guided Sevoflurane Administration in Pediatric Patients Undergoing General Anesthesia: An up-To-Date Systematic Review and Meta-Analysis.

BACKGROUND

The bispectral index (BIS) represents a promising tool for monitoring the depth of hypnosis. However, its utility in guiding sevoflurane administration during general anesthesia in pediatric patients is not well known.

METHODS

We performed a systematic review and meta-analysis of randomized controlled trials comparing BIS-guided versus standard practice sevoflurane administration in pediatric patients. PubMed/MEDLINE, Embase, and the Cochrane Central Register of Clinical Trials were searched for trials published up to May 2025. Analyses were conducted using RevMan 5.4.1., and heterogeneity was assessed using the I2 statistic.

RESULTS

We included nine studies randomizing a total of 730 pediatric patients, of whom 359 (49.2%) were managed with BIS monitoring. BIS-guided anesthesia was associated with significantly lower mean end-tidal sevoflurane concentrations, both during the maintenance phase (MD -0.46; 95% CI: -0.62 to -0.29; p < 0.00001) and at the end of surgery (MD -0.31; 95% CI: -0.47 to -0.14; p = 0.0003). Furthermore, the BIS-guided group experienced a shorter time to airway removal (MD -1.69 min; 95% CI: -2.84 to -0.55 min; p = 0.004) and a shorter time to post-anesthesia care unit discharge (MD -11.82 min; 95% CI: -17.80 to -5.84 min; p = 0.0001). No significant difference was observed in Pediatric Anesthesia Emergence Delirium score between groups (MD -0.35; 95% CI: -1.90 to 1.19; p = 0.65).

CONCLUSIONS

BIS-guided monitoring offers a strategy to reduce end-tidal sevoflurane concentrations, shortening time to airway removal and post-anesthesia care unit discharge in pediatric patients undergoing sevoflurane anesthesia.

STUDY REGISTRATION: PROSPERO, review no. CRD420251067409.