This is probably one of my favorite video series on cardiac arrhythmias. I haven’t watched all the videos yet, but the ones I’ve completed have been great! The EKG video is also a nice introduction to the physiology behind EKG tracings if you need some help understanding that as well. This is definitely a great resource for anyone studying electrophysiology of the heart, so be sure to check it out!
In addition, I’ve added one of my favorite action potential images that can be found through Google. It’s an excellent visual representation of how each area of the heart contributes to the overall EKG tracing. Enjoy!