chapter  66
Acute Coronary Syndromes
Pages 13

INTRODUCTION Unstable angina (UA) and non-ST segment elevation myocardial infarction (NSTEMI) acute coronary syndrome (ACS) are usually caused by atherosclerotic disease. They share a common pathophysiology and may be indistinguishable at initial presentation; the approach to risk stratification and treatment are the same and are differentiated only by the presence or absence of elevated cardiac biomarkers.