British journal of anaesthesia
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Frailty is a risk factor for postoperative delirium (POD), and has led to preoperative interventions that have reduced, but not eliminated, the risk. We hypothesised that EEG suppression, another risk factor for POD, mediates some of the frailty risk for POD. ⋯ ChiCTR2000041092 (Chinese Clinical Trial Registry).