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048 How to Read an Electrocardiogram (ECG/EKG) - ECG ruler, excellent ECG interpretation tool:http://www.ebay.com/itm/251850073305?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649
- very helpful! Great video
- Please do a full guide on how to read EKG :D 
- great video, i'm starting to get this! much appreciated!
- You should state atria repolarization during the QRS complex to avoid confusion.
- Very helpful and good in details
- Thanks.  Very helpful
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- Distole and sistole???!?!?!?!??!
- A good refresher clip
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- You help me so much in my Anatomy & Physiology studies! Thank you so much, i really mean it!
- Good video.. that would also be nice to have the links for other related videos because I cannot find the other episodes mentioned
- You are great! You're explanation made my understandings of the waves much more easier. Thank you!
- show to A & P class
- Thanks
-  Very helpful in cardiovascular physiology
- This is a great example thank you sir!!
- Would I be wrong to believe that the reason as to why the repolarization of the atria doesn't show up on the ECG is because it happens at the same time as the depolarization of the ventricles?