Overcoming age: Slow anesthesia induction may prevent geriatric patients from developing burst suppression and help developing intraoperative EEG signatures of a younger brain
Authors' conclusion
Slow anesthesia induction may be a suitable approach for geriatric patients to preserve spectral composition patterns typically found in younger brains and to individually identify anesthetic requirements reducing the risk of excessive anesthetic effects.
Study context
- Population
- Patients receiving slow propofol induction until loss of responsiveness, then TCI keeping effect-site concentration at loss of responsiveness (LOR) stable
- Participants
- 25 vs 26
- Exposure
- Old vs young patients
- Oldn = 25
- Youngn = 26reference
- Outcome
- Effect of age on spectral composition of the frontal EEG (power spectral density (PSD), band powers; effect size AUC) during slow propofol induction
Methodological detailsslow propofol induction, frontal EEG recording
- Slow propofol induction
- Frontal EEG recording
Main finding
As reported in the abstract
EEG spectral composition by age
- Absolute power in all frequency bands decreased significantly with age
- Spectral composition did not change throughout the extended induction period
- No patient showed a burst suppression pattern
Observational data: associations, not effects.
Further findings
| Outcome | P value |
|---|---|
| Propofol doseOlder patients received significantly less propofol | P < 0.001 |
Original publication
Overcoming age: Slow anesthesia induction may prevent geriatric patients from developing burst suppression and help developing intraoperative EEG signatures of a younger brain. J Clin Anesth. Published 30 October 2024. doi:10.
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