Deep venous thrombosis of the lower extremities
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. Patients admitted to orthopedic ward undergoing hip or knee arthroplasty. 2. Age ranging from 18 to 80 years. 3. No deep venous thrombosis of lower limbs diagnosed by ultrasound one day before surgery 4. All patients have been informed about the study and have signed the consent form.
Exclusion criteria
Exclusion criteria: 1. Patients with preoperative ultrasound diagnosis of deep vein thrombosis (DVT) of the lower limbs or a history of chronic DVT. 2. Individuals with lower limb varicose veins, venous insufficiency of the deep venous valve, venous aneurysms, lower limb arteriovenous injury, or congenital anomalies. 3. Those with liver dysfunction, heart failure, or lower limb venous hypertension caused by pelvic or abdominal tumors. 4. Individuals with abnormal coagulation function or undergoing long-term anticoagulant therapy. 5. Pregnant or lactating women. 6. Patients with unclear consciousness or inability to cooperate with lower limb vascular ultrasound examination. 7. Participants who voluntarily withdraw from the study during the research period.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Popliteal vein diameter;Popliteal vein peak flow velocity;Popliteal vein mean flow velocity;Popliteal vein blood flow volume;Posterior tibial vein diameter;Posterior tibial venous peak flow rate;posterior tibial vein mean flow velocity;posterior tibial vein blood flow volume;Femoral vein diameter;Femoral vein peak flow velocity;Femoral vein mean flow velocity;Femoral vein blood flow volume;Muscle vein diameter;muscle vein peak velocity;muscle vein average velocity;muscle vein blood flow; | — |
Secondary
| Measure | Time frame |
|---|---|
| D-dimer;Cohagulation Function;C-reactive protein;Neutrophil Ratio;triglyceride;platelet count;blood type; | — |
Countries
China
Contacts
First Affiliated Hospital of Air Force Medical University