The Influence of Acute Myocardial Infarction Checklist on the Door-to-Balloon Time

Inclusion Criteria: * all patients who presented to the emergency department of Far Eastern Memorial Hospital within 12 hours of the onset of ischemic chest pain * patients with diagnostic criteria of acute ST-elevation myocardial infarction on electrocardiogram, e.g. at least 0.1 mV in two or more contiguous electrocardiographic leads or a new onset of bundle branch block * patients were preparing for emergency cardiac catheterization Exclusion Criteria: * patients who did not fulfill the diagnostic criteria of acute myocardial infarction on electrocardiogram * patients who were not eligible for cardiac catheterization * patients who refused cardiac catheterization * patients who suffered from acute myocardial infarction after admission to ward or intensive care unit for any reason * patients who had an ambiguous diagnosis that the decision of emergency cardiac catheterization was made after admission to ward or intensive care unit