Which risk factor is associated with an increased likelihood of pulmonary embolism (PE)?

• A. Hypertension
• B. History of DVT/PE
• C. Diabetes Mellitus
• D. Obesity

Answer: (B)

The history of deep vein thrombosis (DVT) or pulmonary embolism (PE) is a significant risk factor for developing pulmonary embolism. This is primarily because a previous occurrence of DVT or PE indicates that the patient has abnormalities in hemostasis or venous return that predispose to clot formation. Individuals who have experienced a DVT are at a heightened risk for recurrent clots, which may dislodge and migrate to the pulmonary circulation, resulting in a PE.

Understanding the mechanics of thrombosis reveals that prior thromboembolic events can create a pathological cycle. It signifies that there is an underlying predisposition, such as inherited coagulopathies or acquired conditions (like prolonged immobility or recent surgery) which also contribute to the likelihood of reoccurrence. Recognizing this history allows healthcare providers to assess the patient's risk profile accurately and implement preventive measures, such as anticoagulation therapy, especially in high-risk settings.

Other factors listed, while they have some association with cardiovascular disease and thromboembolic events, do not specifically confer the same heightened risk for pulmonary embolism as a documented history of DVT or PE does. Therefore, a history of DVT or PE is the most direct and impactful risk factor among the