Anatomy and basic physiology -- ECG recording and ECG leads -- The normal ECG and the frontal plane QRS axis -- The components of the ECG waves and intervals -- P waves and atrial abnormalities -- Chamber enlargement and hypertrophy -- Intraventricular conduction defects -- Coronary artery disease and acute coronary syndromes -- Acute pericarditis -- The ECG in extracardiac disease -- Sinus node dysfunction -- Premature ventricular complexes (PVC) -- Atrioventricular block -- Atrial rhythm disorders -- Ventricular tachycardias -- Ventricular fibrillation and ventricular flutter -- Preexcitation and Wolff-Parkinson-White syndrome (WPW) -- Electrolyte abnormalities -- Electrophysiologic concepts -- Antiarrhythmic drugs -- Pacemakers and their ECGs -- Errors in electrocardiography monitoring, computerized ECG, other sites of ECG recording -- How to read an ECG.