Anaes Vivas · Anaesthesia for the co-morbid & elderly
Equipment viva — the depth-of-anaesthesia monitor (BIS)
An equipment viva on the BIS — the processed EEG reduced to a dimensionless 0-to-100 index; the recommended range (40 to 60); the role in the elderly (the depth titration to reduce the delirium and the overdose); the limitations (the ketamine, the artefact, the elderly-specific EEG changes).
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Prompt
A processed-EEG depth-of-anaesthesia monitor (the Bispectral Index) with the forehead sensor and the displayed index. Describe its principle and its use in the elderly.
Stimulus
This is a processed-EEG depth-of-anaesthesia monitor (the Bispectral Index, the BIS) with the forehead sensor and the displayed index of 52. Describe its principle and its use in the elderly patient.
References2ShowHide
- [1]Coetzee E, et al. Pharmacokinetic and pharmacodynamic changes in the elderly. Anesthesiology Clinics, 2023.PMID 37516494
- [37516495]Bersten AD, Soni N (eds) Oh's Intensive Care Manual. 8th edition, Elsevier, 2018.