Preoperative Copper-to-Zinc Ratio and Postoperative Delirium After Hip Fracture Surgery: A Propensity Score-matched Cohort Study
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Background: Postoperative delirium (POD) is frequent after hip fracture surgery, yet objective biomarkers that improve risk stratification beyond age, dementia, and frailty are limited. The serum copper-to-zinc (Cu/Zn) ratio refl... ...
