Anatomy of the heart: the heart walls and coronary perfusion -- Electrocardiographic changes secondary to myocardial ischemia -- Electrocardiographic pattern of ischemia: T-wave abnormalities -- Electrocardiographic pattern of injury: ST-segment abnormalities -- Electrocardiographic pattern of necrosis: abnormal Q wave of necrosis -- Acute and chronic ischemic heart diseases: definition of concepts and classification -- Patients with acute chest pain: role of ECG and its correlation -- Acute coronary syndrome: unstable angina and acute myocardial infarction -- Q wave myocardial infarction -- Myocardial infarction without Q wave or equivalent: acute and chronic phase -- Clinical settings with angina outside the ACS -- Silent ischemia -- Usefulness and limitations of ECG in chronic ischemic heart disease -- ECG as predictor of ischemic heart disease