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ECG (Electrocardiogram) EKG Lesson - Dr. Campbell, love your lectures. Thank you for sharing! Totally subbing! : )
- What if we have all the P QRS and T waves but it is an irregular rhythm? is it still sinus rhythm?
- students with Oriental accent....
- it was very helpful and interesting! thank you sir. this is exactly what i was looking for.
- I really enjoyed this lecture,I didn't want it to end!
Dr John is a very special man with  unique teaching skills.
And there is no end to his knowledge!.. excellent!!
Just a point of interest 'Fibrillation' is a Latin term which means" bag of worms".
- Pls Dr how does a high blood pressure affect the rhythm?does it cause Tarchycardia? Pls if you can do a video on how the Bp, sino atria rythm,pulse and respiration are related.i mean the co relationship on each other?
- EXCELLENT. MANY THANKS TO YOU!
- beautiful presentation.
- Thank you Dr Campbell you have helped me to understand this!!
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- Great lecture, it helped me so much, thank you.
- great video... thank you...
- I love your lectures! I am so grateful that you have taken the time and trouble to post them, so THANK YOU!
You are a charismatic, knowledgeable speaker... in so many ways. I love all your side notes- like the vagus nerve thing... love it!
I am a 1st year nursing student and I wish I was in your class.
- truly enjoyably class..thank you so much. if only my med school had professors like you
- thank you sooo much this has really helped me. im a nursing student and having an exam on this .This made it so easy to understand .your a life saver :)x
- Thanks for your quick response. If t wave is caused by ventricular depolarization, vector wise it must be downwards. It is instead upwards because of the base of LV that quickly depolarizes cancels with slower depolarization of the apex? Could you clarify on this please? Has been bugging me for so long that I would like to clear this outta way this time by you. If so, could you recommend any reference that I can refer to as well. Your help is so much appreciated. 
- Great lecture Dr. Campbell. Could you tell me why atrial and ventricular repolarizations are upward rather than downward? Is this based on vector or the direction of the conduction system? Does repolarization occur in the same direction as the depolarization? 
- Great lecture, although according to CVS physiology text book by Levick, the atrial repolarisation does not register on the ECG because it's slow and asynchronous and also states that the notion that it doesn't show on the ECG due to the QRS complex. Is there a general misconception on why?
- helpful，thankyou
- Cheers John another helpful video have helped my learning throughout my training.  Can i ask for more videos in lessons please