Postoperative delirium in patients with free flap reconstruction after head and neck tumor surgery: influencing factors for severity and onset time, and a prediction model

POD after head and neck tumor surgery shows marked heterogeneity in severity and onset. Neutrophils and platelets may respectively drive neuroinflammation occurrence and progression, synergizing with blood pressure to regulate POD subtyping. Identified factors enable early multidimensional warning. The prediction model performs well with optimal threshold 0.45-0.55.