Wells criteria

Well's criteria?
Clinical Characteristic Score
Previous pulmonary embolism or deep vein thrombosis + 1.5
Heart rate >100 beats per minute + 1.5
Recent surgery or immobilization (within the last 30 d) + 1.5
Clinical signs of deep vein thrombosis + 3
Alternative diagnosis less likely than pulmonary embolism + 3
Hemoptysis + 1
Cancer (treated within the last 6 mo) + 1
Clinical Probability of Pulmonary Embolism Score
Low 0-1
Intermediate 2-6
High ≥6