Clinical Model of Wells et al for Predicting Probability of Pulmonary Embolism in a Patient

Age of the patient

Gender of the patient

Arterial oxygen saturation (enter from 0 to 100) while breathing room air (FIO2 0.21)

Does oxygenation correct when breathing supplemental oxygen with FIO2 < 0.4?

Does the patient require oxygen supplementation with FIO2 > 0.4 or mechanical ventilation?

Does the patient have hemoptysis?

Does the patient have a pleural rub?

Heart rate

Does the patient have leg symptoms consistent with deep vein thrombosis?

Are the findings of the chest radiograph compatible with PE?

Does the patient have syncope?

Systolic blood pressure

Has the patient developed a recent increase in jugular venous pressure?

Are new S1, Q3 and T3 heart sounds present?

Is right bundle branch block seen on the ECG?

Has the patient had major surgery within the past 12 weeks?

Number of days of complete bedrest in the 4 weeks before presentation

Has the patient had a previous deep vein thrombosis or objectively diagnosed pulmonary embolism?

Has the patient had a fracture of a lower extremity with immobilization within the past 12 weeks?

Number of family members with a proven history of deep vein thrombosis or pulmonary embolism

Does the patient have a first degree relative with a hereditary thrombophilia?

Does the patient have a significant malignant disease?

Is the patient given birth in the last 12 weeks?

Does the patient have paralysis of the lower extremities?

Chest pain

Dyspnea

Fever

Alternative diagnosis to PE