Which symptom is NOT typically associated with a pulmonary embolus?

In the context of a pulmonary embolus, common symptoms include chest pain, shortness of breath, and tachycardia. These symptoms arise due to the obstruction of blood flow in the pulmonary arteries, leading to increased pressure in the pulmonary circulation, decreased oxygen exchange, and the body's response to stress and lack of oxygen.

Chest pain is often sharp and can worsen with deep breathing, while shortness of breath may occur suddenly, reflecting the impact on respiratory function. Tachycardia, an elevated heart rate, is a physiological response to hypoxia and stress, as the heart works harder to deliver oxygen to vital organs.

Rest pain, however, is not a typical symptom associated with pulmonary embolism. This term usually describes pain in the legs or feet when at rest, often linked to peripheral artery disease or severe ischemia, which is a different pathological process. Therefore, it does not relate to the condition of a pulmonary embolus.