Clinical and economic outcomes associated with hospitalizations for acute idiopathic pericarditis in the United States.

Background: Outcomes-based data regarding the management of hospitalized U.S. patients with acute idiopathic pericarditis (AIP) are lacking.

Lone atrial fibrillation is associated with pectus excavatum.

Background: Pectus excavatum is a skeletal abnormality that may have cardiac manifestations.

Objective: To determine whether pectus excavatum is associated with lone atrial fibrillation (AF).

Methods: The pectus severity index (PSI) is the ratio of the lateral diameter of the chest to the distance between the sternum and the spine on computed tomography scan.