Intraoperative electroencephalographic marker of preoperative frailty: a prospective cohort study

Frailty was common in elderly patients undergoing non cardiac surgery. Electroencephalogram alpha-band power does not predict preoperative frailty above patients' age. Frailty predictions by machine learning algorithms, were not improved by the addition of electroencephalogram features. Frailty might be different to the concept of brain vulnerability, accounting for a possible brain-body dissociation.