Acute coronary syndrome (ACS) refers to a group of symptoms attributed to obstruction of the coronary arteries with the most common symptom presented as chest pain. In this book, the authors discuss current research in the study of the symptoms, treatment and prevention of ACS. Topics include antiplatelet therapy in ACS and novel antiplatelet agents; ACS in patients with prior coronary artery bypass graft; the incidence, impact on morbidity and mortality on atypical presentation in ACS; statins use in acute coronary syndrome; dietary assessment and cardiovascular disease risk estimation scores; the importance of renal insufficiency in ischemic heart disease; the relationship between acute coronary syndrome and leukocyte count; and ischemic heart disease in the elderly.