Anesthetic drugs & techniques

Electroencephalographic guided propofol-remifentanil target controlled infusion (TCI) anesthesia with and without dexmedetomidine in a geriatric population: electroencephalographic signatures and clinical evaluation

J Clin Monit ComputPublished Randomised controlled trial

Authors' conclusion

This pilot study demonstrates that the two proposed anesthetic regimens can be safely used to slowly induce anesthesia and avoid EEG burst suppression patterns.

Study context

Population
Patients aged > 69 years scheduled for non-neurologic, non-cardiac surgery with planned intervention time > 60 min, Osorno/Valdivia, Chile
Participants
23 patients
Comparison
Propofol vs Dexmedetomidine
  • Propofoln = 10reference
  • Dexmedetomidinen = 13
Methodological detailspilot, prospective, non-blinded intervention
  • Pilot
  • Prospective
  • Non-blinded intervention

Primary result

As reported in the abstract

Burst suppression and EEG signatures · During slow induction, maintenance, and emergence
  • Burst suppression not observed in either group
  • EEG signatures differed significantly between groups; propofol group dominated by faster rhythms than dexmedetomidine group

Further findings

OutcomeP value
Time to responsivenessNot significantly differentP = 0.352

Postoperative cognitive outcomes (Montreal Cognitive Assessment (MoCa) test, sedation agitation scale) · up to one hour after extubation

No significant differences between groups

Original publication

Electroencephalographic guided propofol-remifentanil TCI anesthesia with and without dexmedetomidine in a geriatric population: electroencephalographic signatures and clinical evaluation. J Clin Monit Comput. Published 7 March 2024. doi:10.1007/s10877-024-01127-4

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