[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.

[Endovascular therapy for traumatic arterial injury].

OBJECTIVE: To explore the clinical efficacies of endovascular therapy for traumatic arterial intima injury, arterial pseudoaneurysm and arteriovenous fistula. METHODS: From October 2009 to December 2011, 24 patients of arterial intima injury, arterial pseudoaneurysm and arteriovenous fistula underwent endovascular therapy including embolism and stent implantation, etc. RESULTS: Among them, 14 patients were punctured directly and another 10 were punctured after the exposure of arteries. The interventions included embolism (n = 3), embolism plus covered stent implantation (n = 2), covered stent implantation (n = 12) and bare stent implantation (n = 7). And the surgical success rate was 100%. After endoluminal treatment, arterial blood flow recovered, arterial pseudoaneurysm shrank, local pain relieved and venous blood pressure decreased. CONCLUSION: As an effective therapy for traumatic arterial intima injury, arterial pseudoaneurysm and arteriovenous fistula, endovascular therapy has minimal trauma, fewer complications and satisfactory outcomes.

[Clinical treatment of application of deep venous thrombosis by retrievable vena cava filter].

OBJECTIVE: To summarize the clinical experiences of treating deep venous thrombosis (DVT) with retrievable vena cava filter. METHODS: A total of 180 patients with DVT in unilateral lower extremity were recruited. There were 82 males and 98 females with an average age of 46 years old. After the diagnosis of vascular color Doppler ultrasound, retrievable vena cava filter was implanted through contralateral femoral vein. Simultaneously another 114 patients underwent femoral vein embolectomy. All cases received the post-operative therapies of anticoagulation, thrombolysis and vasodilation. RESULTS: The implantation of retrievable vena cava filter was successful in all cases. Among 142 cases of attempted extraction, 116 filters were extracted successfully at Days 12 - 24. The success rate was 81.69%. Filters captured thrombosis in 34 cases (29.31%). CONCLUSION: As a safe and efficacious method, the implantation of retrievable vena cava filter prevents the occurrence of pulmonary embolism in the patients with DVT in unilateral lower extremity. Its timely extraction may avoid the long-term complications.