NPPB and appendicitis: Troponin increased (34.3%)Chest pain (32.6%)Myocarditis (23.8%)Electrocardiogram abnormal (16.8%)Dyspnea (5.9%)C-reactive protein increased (5.6%)Pericarditis (3.8%)Appendicitis (3.2%)Brain natriuretic peptide increased (3.0%)