Wells Score for DVT
Pre-test probability of deep vein thrombosis, to direct D-dimer versus ultrasound.
When to use it. A patient with a painful or swollen leg, before ordering anything.
इस पृष्ठ की चिकित्सा-सुरक्षा जानकारी अंग्रेज़ी में दिखाई गई है। इसे अभी तक किसी ऐसे चिकित्सक ने नहीं जाँचा है जो हिन्दी पढ़ते हों, और बिना जाँचा अनुवाद भरोसे के लायक नहीं है।
0points
DVT unlikely
DVT unlikely (score ≤ 1; three-tier probability: low). A negative high-sensitivity D-dimer excludes DVT without imaging. A positive D-dimer means ultrasound.
- Two-level
- Unlikely
- Three-tier probability
- Low
One point each for the nine clinical features; minus 2 if an alternative diagnosis is at least as likely. Two-level reading: ≥ 2 = DVT likely, ≤ 1 = DVT unlikely.
Limits of this score. A pre-test probability, not a diagnosis. It is not validated in pregnancy, in suspected upper-limb DVT, or in someone already on anticoagulation. 'DVT unlikely' plus a negative D-dimer excludes DVT; 'likely' goes straight to ultrasound whatever the D-dimer shows.
Sources
- Wells PS, et al. Evaluation of D-dimer in the diagnosis of suspected deep-vein thrombosis. N Engl J Med. 2003.
Where this is written from. This site is written from Indian clinical practice. Drug availability and brand names, vaccination schedules, national health programmes and some reference cut-offs differ between countries — a schedule or a threshold that is standard here may not be standard where you are. If you are reading outside India, check anything on this page against your own country’s guidance before you act on it.
Educational use only — not medical advice. Never a substitute for clinical judgement.