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6th July 2026
Investigation
| Clinical signs and symptoms of DVT (minimum of leg swelling and pain on palpation of the deep veins) | 3 |
|---|---|
| An alternative diagnosis is less likely than PE | 3 |
| Tachycardia (Heart rate more than 100 beats per minute) | 1.5 |
| Immobilisation for more than 3 days OR surgery within the previous 4 weeks | 1.5 |
| Previous history of either DVT or PE | 1.5 |
| Haemoptysis | 1 |
| Malignancy (on treatment, has been on treatment within the last 6 months, or palliative) | 1 |
| PE likely | More than 4 points |
| PE unlikely | 4 points or less |
Table 6- 2 Level PE Wells Score (adapted from: https://bmjopenquality.bmj.com/content/suppl/2015/12/08/bmjquality.u208698.w4222.DC1/ds6617.pdf)
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