Development and validation of a risk prediction model for venous thromboembolism after surgery in elderly patients with lung cancer

The incidence of postoperative VTE in elderly lung cancer patients is relatively high. Key risk factors include an extremely high-risk Caprini score, surgical duration ≥ 120 min, open surgery, clinical stage III-IV disease, preoperative chemotherapy, positive D-D>3.64 mg/L, and elevated CRP levels. The nomogram-based risk prediction model developed in this study exhibits high discrimination and accuracy, with good predictive ability and clinical utility, providing a basis for targeted prevention and management strategies.