Internal Medicine
Wells' Criteria for DVT
Calculates the pre-test probability of Deep Vein Thrombosis.

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Parameters
Wells' Criteria for DVT Result
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Formula
Sum of clinical points.Clinical Pearls
Helps to rule out DVT in combination with a D-dimer test in low or moderate probability patients, safely reducing the need for ultrasound.
Normal Values / Reference
A score of < 1 is considered "Low Risk" and when combined with a negative highly sensitive D-dimer, effectively rules out DVT.
Limitations
Not validated in pregnant patients or pediatric populations.