Essential companion for anyone studying EKGs/ECGs or working in the medical field including EKG and ECG technicians, nurses, and emergency medical technicians. This guide features an introduction to EKGs and how they work and also includes detailed sections covering the main types of arrhythmias, such as sinus rhythms, atrial rhythms, junctional rhythms, ventricular rhythms, and heart blocks. Includes illustrations of the waves you need to know, along with the rate, rhythm, P wave, PR interval, and QRS complex, of each rhythm covered are also included to help with identification. 6-page laminated guide includes: Basics Conduction Pathway Electrocardiogram EKG Paper Pacemaker Pacing Key Terms Heart Blocks Ventricular Rhythms Junctional Rhythms Atrial Rhythms Waveforms Analyzing EKG Rhythms Sinus Rhythms.