Cardiac axis

This video is helpful in studying the cardiac axis. Beginning of the video tells us about normal axis and deviations from the normal axis. Then it teaches us the methods of determining those deviations. Timeline 0:00 Introduction 0:04 Definition 0:31 Determination of axis 0:50 Normal axis 0:56 left axis deviation 1:00 Right axis deviation 1:05 Northwest deviation 1:15 Isoelectric wave 1:42 Quadrant method 2:38 Isoelectric lead method