Acute coronary syndrome (ACS) encompasses a spectrum of clinical entities, ranging from unstable angina (UA), non-ST-segment elevation myocardial infarction (NSTEMI) to ST-elevation myocardial infarction (STEMI). This book analyzes new research on the diagnosis and management of ACS. The first chapter reviews ethnic and gender differences in the diagnosis, risk factors and management of a multiethnic population in Malaysia. Chapter Two summarizes data from available studies conducted over the past last 30 years about pharmacologic reperfusion therapy including comparison with primary angioplasty. Chapter Three discusses the up-to-date available studies that have investigated consent in cardiology.