Which of the following is a common sign of pulmonary embolism?

Leg pain and swelling are commonly associated with pulmonary embolism due to the typical formation of deep vein thrombosis (DVT) in the legs, which can result in blood clots. When these clots dislodge, they can travel to the lungs, causing a pulmonary embolism. The pain and swelling occur because of the blockage in blood flow, leading to inflammation and increased pressure in the affected area. Additionally, the affected leg may feel warm to the touch and may have a different color compared to the other leg.

The other options do not present as common signs of pulmonary embolism. Increased appetite and energy are not related to this condition and do not reflect the symptoms typically observed. Prolonged fever and vomiting could indicate other medical issues but are not characteristic of pulmonary embolism. Similarly, a chronic cough lasting more than two weeks may indicate an unrelated respiratory condition rather than a direct sign of a pulmonary embolism. Understanding the signs and symptoms of a pulmonary embolism is critical for timely identification and intervention.