If the initial electrocardiogram (ECG) is not diagnostic or if the patient remains symptomatic and there is clinical suspicion for ACS, serial ECGs, initially at 15-30 minute intervals ...

As the term STEMI implies, the 12-lead ECG shows significant ST segment elevation during STEMI, unlike the ST depressions and ST-T wave changes seen during unstable angina and non-ST segment ...

Acute coronary syndromes are categorized into unstable angina, non-ST segment elevation ... in myocardial necrosis as identified by elevated cardiac biomarkers (see Cardiac Biomarkers) with ...