Electrocardiography has an ever-expanding role in pediatric cardiology evaluation. The specific competencies required for its optimal use in this setting, however, generally lie beyond the expertise of cardiologists used to dealing with adults. This guide the product of extensive practical experience in the field of pediatric cardiology proposes a very simple method for reading neonatal and pediatric ECGs that is based on the application of straightforward criteria and permits the immediate recognition of normal and pathological patterns. The first part of the guide presents and describes...