Background: Aspirin and nonsteroidal anti-inflammatory drugs (A/NSAIDs) are the mainstay treatments for acute pericarditis. We sought to identify factors predicting failure of A/NSAIDs and switch to corticosteroid treatment (STCT) as well as the impact of STCT on pericarditis recurrence. Methods: We enrolled 148 patients with acute pericarditis receiving A/NSAIDs (n=110) or corticoste... https://www.roneverhart.com/2-1-2-x-1-4-x-36-Smooth-Saddle-Threshold-NGP-410-36/