Abstract: Objective To explore the related factors of pulmonary embolism(PE) in patients with deep venous thrombosis after fracture surgery.Methods 130 patients with deep venous thrombosis after fracture surgery treated in our hospital from January 2019 to July 2021 were retrospectively selected to analyze the incidence of PE and compare the clinical data of patients with and without PE,the influencing factors of PE were analyzed.Results The incidence of PE was 19.23%.The proportion of patients with concurrent PE,age over 60 years,smoking,diabetes and malignancy were significantly higher than those without PE(P<0.05).The D-dimer in patients with PE was significantly higher than that in patients without PE(P<0.05).Logistic regression analysis showed that age,smoking and malignant tumor were the influencing factors of deep venous thrombosis complicated with PE(OR=2.199,2.469 and 2.779,P<0.05).Logistic regression equation predicted that the area under the ROC curve of PE was 0.811,P<0.05,and its sensitivity and specificity were 83.00% and 80.00% respectively.Conclusion Deep venous thrombosis complicated with PE after fracture surgery is affected by patients’ age,smoking and malignant tumor,which is worthy of clinical attention.

Key words: fracture, deep venous thrombosis, pulmonary embolism, influence factor