In this section we will explore the fundamentals of EKG interpretation. I will begin by reviewing cardiac anatomy and electrophysiology then go over what each EKG wave and segment represents. You will learn how to identify sinus rhythm and ensure proper lead placement, how to calculate the heart rate and how to determine the QRS axis. By the end of this lecture you will have a solid foundation from which to build upon as you learn about EKG pathology later in this lecture series. Let’s dive in!