A patient was admitted to the ICU 5 days ago with a diagnosi…

A patient was admitted to the ICU 5 days ago with a diagnosis of myocardial infarction. The patient is complaining of increased chest pain when coughing, swallowing, and lying supine. The nurse hears a systolic scratching sound upon auscultation of the apical pulse. Based on the symptoms, which condition will the nurse suspect?