Table 1 Wells clinical decision rule.
Variable | Points |
|---|---|
Clinical signs and symptoms of DVT (minimum of leg swelling and pain with palpation of the deep veins) | 3.0 |
Alternative diagnosis less likely than PE | 3.0 |
Heart rate > 100/min | 1.5 |
Immobilization (>3 days) or surgery in the previous 4 weeks | 1.5 |
Previous PE or DVT | 1.5 |
Haemoptysis | 1.0 |
Malignancy (receiving treatment, treated in the last 6 months or palliative) | 1.0 |