The prognosis of pericarditis is related to the etiology. Patients with nonidiopathic cause have a worse prognosis and event-free survival compared with patients with idiopathic or viral pericarditis.

Constrictive pericarditis (CP) is caused by reduction in the elasticity of the pericardium resulting in impaired diastolic filling of the heart. All types of CP were thought to be irreversible in ...