This document discusses the assessment of the cardiovascular system through history and physical examination. It begins by introducing the cardiac conduction system, including the sinoatrial node, atrioventricular node, bundle of His, bundle branches and Purkinje fibers. It then discusses taking a thorough cardiac history, including presenting symptoms, past health history, risk factors and the NOPQRST format for evaluating chief complaints. Common cardiovascular signs and symptoms are also reviewed such as chest pain, dyspnea, edema and palpitations.