Deep vein thrombosis diagnostic approach
Editors-in-Chief: C. Michael Gibson, M.S., M.D. Associate Editor-In-Chief: Ujjwal Rastogi, MBBS [1]
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Deep Vein Thrombosis Microchapters |
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Diagnosis |
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Treatment |
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Special Scenario |
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Trials |
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Case Studies |
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Deep vein thrombosis diagnostic approach On the Web |
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Risk calculators and risk factors for Deep vein thrombosis diagnostic approach |
Overview
| Suspected (Symptomatic) Acute DVT | |||||||||||||||||||||||||
| Compression Ultrasonography | |||||||||||||||||||||||||
| Normal | Inconclusive study | DVT present | |||||||||||||||||||||||
| Serial Ultrasound or impedance plethysmography | Venography or MRI | Treatment | |||||||||||||||||||||||
| Negative for DVT | DVT present | ||||||||||||||||||||||||
| DVT Absent | |||||||||||||||||||||||||
| No Treatment | |||||||||||||||||||||||||
| DVT present | |||||||||||||||||||||||||
| Treatment | |||||||||||||||||||||||||
Considerations
- Positive predictive value for compression ultrasonography is 94 percent (95% CI)
- Venography is used only
- when noninvasive testing is not clinically feasible
- The results are equivocal
- A negative D-dimer assay, as a stand-alone test may be insufficient to rule out DVT, especially in patient with a high venous thromboembolism prevalence.