Analyses of risk factors for deep vein thrombosis in lower extremities

Objective To explore the risk factors of deep vein thrombosis (DVT) in lower extremities. Methods Retrospective data analyses were performed for a total of 1264 DVT patients at our department from January 2010 to December 2012. Results Among them,984 cases (77.85%) were over 40 years old, no overt cause was found for 642 cases (50.79%), 142 cases (11.23%) had a clear history of trauma before onset (without surgery).Among 316 recurrent postoperative cases, there were the surgical histories of orthopedics (n=142, 11.23%), gynecology (n=90, 7.12%), general practice (n=42, 3.32%), vascular (n=23, 1.82%), urological (n=12, 0.94%) and others (n=7, 0.55%).Ten cases (0.79%) occurred after suffering bedridden chronic diseases.And 20 cases (1.58%) were caused by conditions during pregnancy or postpartum period.had Malignant tumors were found in 25 (1.98%) patients.After long-term uses of hormones, 10 patients (0.79%) of rheumatoid arthritis had a recurrence.Owing to varicose veins, 27 patients (2.14%) recurred.Eight patients (0.63%) had a history of drug abuse, 2 cases (0.16%) suffered depression and 62 cases (4.9%) were recurrent. Conclusion There are many causative factors of DVT so that prevention is of great importance.We should pay more attention to the prevention and treatment of high-risk DVT patients. Key words: Deep venous thrombosis; Risk factors