Master Wells' Criteria for Pulmonary Embolism with Picmonic for Medicine

3 points are counted in patients with clinical signs and symptoms of DVT. These include swelling of the leg or along a vein in the leg, pain or tenderness in the leg, increased warmth in the area of the leg that's swollen or painful, or red or discolored skin on the leg.

If the alternative diagnosis is less likely than PE, 3 points are added to the score.

If the patient has tachycardia (Heart rate > 100), 1.5 points are added to the score.

If the patient has a history of immobilization for greater than 3 days, or recent surgery in previous 4 weeks, 1.5 points are added to their score.

If they have a previous history of DVT or PE, 1.5 points are added to their score.

If the patient displays hemoptysis, the score gains 1 point.

If the patient has untreated cancer, one undergoing treatment currently, or in last 6 months, or if they are receiving palliative care, the score increases by 1 point.

A score of greater than 6 correlates with a high probability of pulmonary embolism.

A score of 2-6 correlates with a moderate probability of pulmonary embolism.

A score of less than 2 indicates a low probability of diagnosing a pulmonary embolism.