Heart and clots

Wells score for PE

How likely a pulmonary embolism is, before any test.

TellA clot in the lung usually started in the leg, so the score asks about the leg, the heart rate, and the reasons blood stopped moving.

Clinical signs of DVT: leg swelling and pain along the deep veins+3
PE is the most likely diagnosis+3
Heart rate over 100+1.5
Immobilized 3 or more days, or surgery in the last 4 weeks+1.5
Prior DVT or PE+1.5
Coughing up blood+1
Cancer treated in the last 6 months, or palliative+1

0 points

PE unlikely

Check a D-dimer. Over age 50, use the age-adjusted cutoff (age × 10 µg/L FEU). Negative ends the workup. If your gut says very low, try PERC first and skip the D-dimer.

Nothing you enter is saved or sent. US units. Education, not medical advice.