Pediatric cardiology is a specialized branch of medicine focused on diagnosing and treating heart conditions in infants, children, and adolescents. This field comprises congenital heart defects, arrhythmias, and acquired heart diseases. Pediatric cardiology uses advanced diagnostic tools like echocardiograms, electrocardiograms, and cardiac MRIs to assess heart function and structure. Treatments may include medication, catheter-based procedures, or surgery. The goal is to manage heart conditions effectively, ensuring optimal growth and development. Preventive care, early detection, and family education are critical components, helping to improve long-term outcomes and quality of life for young patients. This book will also provide interesting topics for research which interested readers can take up. It unfolds the innovative aspects of pediatric cardiology which will be crucial for the progress of this field in the future. As this field is emerging at a rapid pace, the contents of this book will help the readers understand the modern concepts and applications of the subject.