This guide provides comprehensive coverage of the NHA-CET exam, focusing on the essentials of electrocardiography. It includes detailed chapters on cardiovascular anatomy, the function and structure of the heart, EKG equipment, and lead placement. Practical insights into patient preparation, safety protocols, and EKG procedure interpretation are also covered. Special sections on advanced EKG concepts, legal and ethical considerations, and emergency procedures ensure a thorough understanding of the field. This guide is an invaluable resource for those aiming to become certified EKG technicians.