Wells Clinical Score for Deep Vein Thrombosis
| Clinical Parameter Score | Score |
|---|---|
| Active cancer (treatment ongoing or within 6 months) | +1 |
| Paralysis or recent immobilization of LE | +1 |
| Recently bedridden for > 3 days or major surgery < 4 weeks | +1 |
| Localized tenderness along the distribution of the deep venous system | +1 |
| Entire leg swelling | +1 |
| Calf swelling > 3 cm compared to the asymptomatic leg | +1 |
| Pitting edema (> asymptomatic leg) | +1 |
| Previous DVT documented | +1 |
| Collateral superficial veins (nonvaricose) | +1 |
| Alternative diagnosis (as likely or > that of DVT) | -2 |
| Total Score | |
| High probability |  3 |
| Moderate probability | 1-2 |
| Low probability |  0 |
Source: Anand SS, Wells PS, Hunt D, et al. (1998).
Additonal Risks of DVT
- AIDS
- Varicose veins
- Pacemakers
- Pregnancy
- Obesity
- Acute MI
- Long airline flights
- Recent central venous catheterization
- Blood type A
- Antithrombin deficiency
- Oral contraceptives