Acute Pericarditis - Repetition Drill Supplementary Training Listening Tips S1: Rubbing, scratchy sound.Systole: Rubbing, scratchy sound, usually loudest during systole.S2: Rubbing, scratchy sound.Diastole: Rubbing, scratchy sound. Sitting leaning forward Diaphragm Listen for 2-3 minutes Patient Normal Speed play pause Simulated Full Speed play pause