Related Experiment Videos
Diagnosis of deep vein thrombosis, an overview
M C Janssen1, H Wollersheim, I R Nováková
1Department of Medicine, University Hospital, Nijmegen, Netherlands.
Insights
Diagnosing deep vein thrombosis (DVT) requires objective testing due to unreliable symptoms. Non-invasive methods are effective for initial DVT diagnosis, while contrast venography remains definitive for recurrent cases.
Area of Science:
- Medical Diagnostics
- Vascular Medicine
- Radiology
Background:
- Clinical signs and symptoms of deep vein thrombosis (DVT) are often unreliable, necessitating objective diagnostic methods.
- Accurate diagnosis is crucial for effective treatment and management of DVT.
Purpose of the Study:
- To review and compare the advantages and disadvantages of various diagnostic methods for deep vein thrombosis (DVT).
- To assess the utility of non-invasive techniques versus contrast venography for diagnosing initial and recurrent DVT.
Main Methods:
- Comparative review of diagnostic modalities including contrast venography, plethysmography, ultrasound, fibrinogen leg scanning, CT, MRI, and blood tests.
- Evaluation of diagnostic accuracy, sensitivity, and specificity for different patient populations (first vs. recurrent DVT).
Main Results:
- Non-invasive methods like serial plethysmography and ultrasound are sufficiently sensitive and specific for diagnosing initial DVT, allowing safe withholding of anticoagulants if negative within one week.
- Contrast venography remains the gold standard for definitive diagnosis in cases of suspected recurrent DVT.
- D-Dimer testing can serve as an adjunct test to help exclude active thromboembolism in both first and recurrent DVT events.
Conclusions:
- Objective diagnostic testing is essential for deep vein thrombosis (DVT) due to unreliable clinical presentation.
- Non-invasive tests are adequate for initial DVT diagnosis, but contrast venography is still required for recurrent cases.
- D-Dimer testing offers supplementary value in ruling out thromboembolism.
Abstract:
Because clinical signs and symptoms are unreliable the diagnosis of deep vein thrombosis (DVT) should be objectified. Advantages and disadvantages of contrast venography, plethysmography, ultrasound techniques, fibrinogen leg scanning, computer-assisted tomography, magnetic resonance imaging and blood tests are discussed. In patients with a first event of suspected DVT non-invasive methods like serial plethysmography or ultrasound testing are sensitive and specific enough to make a treatment decision. It is safe to withhold anticoagulants if the test remains normal within 1 week. In patients with suspected recurrent DVT new non-invasive techniques are being tested, but up to now the definitive objective diagnostic test continues to be contrast venography. In first period as well as in recurrent DVT D-Dimer testing could be an additional test to exclude active thromboembolism.