Pediatric Cardiopulmonary Diseases, which has an important place in the field of Pediatrics, has guided and shaped the health-related efforts of humanity throughout history. Even in ancient times, some observations were made on chest and cardiac diseases in children and treatment methods were tried to be developed. However, with the development of modern medical science, understanding and approaches to pediatric chest diseases have changed significantly.. This book aims to share with the reader the important developments and advances in this field by addressing certain problems seen in pediatric cardiopulmonary diseases. It is intended to be a reference for health professionals, researchers and students working in pediatric health and diseases. We hope that it will contribute to a more effective approach to the clinical management of each of my colleagues who dedicate their lives to pediatric health.