Which statement best describes the chest pain in acute pericarditis?

• A. Pleuritic sharp chest pain worse with lying flat and deep inspiration
• B. Pressure-like chest pain relieved by rest
• C. Pain unrelated to position
• D. Pain only with exertion

Answer: (A)

Acute pericarditis classically causes a sharp, pleuritic chest pain that is worsened by deep inspiration and lying flat, and it often improves when you sit up and lean forward. This happens because the inflamed pericardium and adjacent pleura are irritated by chest movement and inspiration, and lying down increases venous return and pericardial pressure, intensifying the pain. Sitting up forward changes the angle and reduces pericardial pressure and friction, relieving the pain.

Thinking about the other descriptions: a pressure-like pain that’s relieved by rest points toward myocardial ischemia or angina; pain not related to position could be musculoskeletal or esophageal; pain only with exertion also suggests exertional ischemia.