This video is nothing short of a masterpiece. To explain a difficult concept so easily truly shows how much of an expert you are. Thank you, Dr. Campbell.

Summary: 12 leads = 12 views of the heart 10 electrodes used. 4 in limbs, 6 in the chest. Right leg is used as a ground (earth). The electrodes in three limbs form a triangle, which gives 6 views ( 3 Biploar views (Lead I, II, III) and 3 unipolar views (aVR, aVL, and aVF). Other 6 leads (views) are obtained from 6 electrodes placed in the chest region that give Horizontal Plane.

You did what multiple professors and hundreds of other videos on here couldn’t do. This was all I was missing to understand the bigger picture. Thank you 🙏🏻

Oh my goodness! Why didn't any of my teachers explain it this well? Thank you so much for making this available!

Such a NICE video! I finally got it! Took me ages to read and get this and understand so well. Its teacher's like you that make medicine a beautiful art! Much love from Canada!

The clearest, easiest to understand explanation of this subject out of the many I've watched, thank you.

The best explanation of 12 lead ECG I've ever seen. Thank you very much, Dr. Campbell!

Dear Dr. Campbell, thank you for the amazing lecture ! You make the subject easier to understand, you are magnificent teacher !

Studying for paramedic and this is the best video of explaining 12 lead i can find. Awesome

Thank you very much for this, doctor! I wish my trainers were anything like as clear and succinct when explaining these concepts. I'm extremely grateful to you for producing such high quality content.

Wow. I have struggled with this concept for two weeks and you explained it in 10 minutes where I perfectly understood it. Thank you so much for posting this video

This was wonderful. I have been a RN for several years and have struggled with this concept. Thank you!

This is the simplest explanation I’ve ever received!! I can now say I finally understand this . Thank you so much

This is the best explanation of the ECG leads...thank you so much doctor!

Thank you! I'm in Paramedic school and we just started cardiology, our textbook only gives this about 2 paragraphs of explanation before jumping into rhythms. This video helped me to understand how and why the different leads work, rather than "here's how to put the electrodes on, now just look at Lead II mostly".

I have watched a number of your videos to help me understand what they don't seem to be able to teach in class, you are amazing! I always understand what your saying and you make everything clear, thank you!

I just love you, sir. May Allah give you a healthy and happy life

Dr. Campble, you are the best. I am an auditory learner first and foremost and a visual learner second, you present both beautifully, I thank you emensly, thank you, thank you.

I had an aha! Moment watching this! I'm sharing this with my nursing cohort!

I really appreciated this video. Dr. Campbell explained my questions thoroughly, about why it’s called a 12 lead ecg, when you actually only place 10 leads on the patient. I LOVE learning about the heart, and this video did not disappoint! Thank you, Dr. Campbell.

Honestly, I am a Nurse and Physical Therapist by professions. Passed my board exams both in my country and the US; but is only now that 12 lead ekg is clear to me. thank you sir! nice

took me 7 months to fight with the concept , but now I realized 10:04 minutes were enough ..

Wow...when God blesses someone w/ a gift, you can never take it away from them...I will say it again...You are just the best teacher on KZfaq period!

Out of all the EKG videos I've watched. This is the best explanation and it makes sense. Easy to understand. Thanks!

This is the clearest explanation I've heard anywhere. My friend suggested this video to me and I'm glad she did. Many thanks!

Greatest explanation on ECG on KZfaq - Thank you very much, Sir!

Sir I watched many videos,but this video really made me understand how actually an ECG works.thank you for your effort sir

This seriously explained it SO well!! Thank you so much, have both of your books and really appreciate the way you teach.

Took my whole life to try to understand 12 leads ECG.but now just with in 10 minutes.basic concept has cleared. Thanks a lot sir.

Thank you so much, Dr.John Campbell! This has been confused me for more than 20 years! I was exhausted! This waked me up! You made it crystal clear!

Thank you so much Dr.Campbell for this short and to the point video.

This is complex simplified💯💯. God bless you doc.

From this video I think I finally understand ECG's! Thank you! from Bristol, England.

Thank you Dr Campbell for a simplified explaination . Now i can understand it better

Wow finally I have understood the concept of ecg. Thank you so much Sir, May God Bless you.

Thank Dr. Very useful and simply explained yet comprehensive 🙏

Thankyou so much Sir. I have always been scared of ECG and you just helped me get over it. I can't wait to watch the rest of your videos.

This guy's a freaking rock star! I've watched quite a few videos trying to grasp this and none really clicked until this one.

I am a nurse and we just had to do this a day ago! This really helped me understand what I was doing. Thanks you!

Amazing. No one could ever explain it this simple.

Thank you! After weeks of trying to understand this topic it has finally clicked! Extremely easy to follow video! 👍🏼

Fantastic Video! Video summary 10 electrodes are used 12 leads/ format Eidnoven Triangle Lead I,II,III are first Lead I= view from the top RA and LA Lead II= view from the right arm to left leg Lead III= view from left arm and left leg avr= right side view of heart avl= left side view of the heart avf= view from the foot foot= left leg the right leg is used as the ground earrth There is 6 chest lead also known as precordial lead v1 on the 4th intercostal space to the right of the sternum v2 on the 4th intercostal space to the left of the sternum v4 on the 5th intercoastal space left midcalvicular line V3 between the middle of v2 and v4 V5 placed at same level of v4 but at the axillary line V6 placed at level of V5 midaxillarly line The purpose of all these leads is to give us view of the heart from different angles which is important to detect possible heart problems

Very nice way of teaching... Able to understand very well even those who are not the native English speakers.. Thanks a lot..

The best of ECG explanation 😍.. From 🇮🇳INDIA

Awesomely explained Sir !! Previously i haven't understood while reading it from book, now my concept is crystal clear.

Simply spectactular explanation there Dr, you are wonderful. I have been trying to understand this concept all day till bumped into your vid. Thank you ever so much, from the bottom of my heart. no pun intended.

Great tutorial! I'm preparing for my medical assistant exam and this is all on it. I understand so much better now

I use this video when I teach my 12 lead class. Thank you for so clearly explaining how the leads work and how we get different views of the heart.

One of the best explained EKG leads video I ever seen! Thanks! Gracias!

Phenomenal. I love the way that you explain the information. It really helps me to learn the information and to understand it too. Thank you very much for all of your amazing videos.

What a refreshing video. The style of teaching and professionalism. I understood the information and so surprised I did...

Awesome!!! You nailed it to the point!!! I was not understanding this in the class room. “Let’s move on” yike!!! Thank you again 🤝

Such a helpful and easy to understand presentation Dr. Campbell, Thank you.

Thank you, Dr. Campbell for simplifying this concept for me.

You, sir, are amazing! Love, gratitude and blessings from South Africa!

The simplest explanation i have come across so far.... Thank you

Thank you Dr. Campbell. You speak and explain so clearly. Iam glad I found your video. it's helping me understand things a lot better.

Indeed this is the best video to know the views aspect of the heart. I have no words to say you a thank you. Thank you so much sir. God bless you.

Thank you Sir. i saw at least 20 videos but they could not grasp this concept. this video got me sorted. Much appreciated!

Thank you so much sir 🙏🏿. This has been a though concept to understand and you made it so simple in barely 10mins

Thank you Dr. Campbell you explained so well, answered so many of my questions 🙏

Really clear presentation. VERY useful. Thank you Dr Campbell.

I still can't imagine the view of the heart but at least I've gained a little bit of understanding here. Thanks Dr John Campbell

Wonderful video! Thank you. I really struggled with this subject until your video.

Impressive video! You made it simple in a way that we can easily understand and yet its straightforward! I’ve been looking for this kind of video and this is so helpful. Thanks!

Thank you for such a enlightening video. Was ECG technician for years!

Thank you for this. I haven't done the ACLS cause I worked for 5 years in the NICU and ECG skills were barely utilized in our department, if at all. But now I'm trying to transition to adult nursing so I really need to review these topics. This was really helpful, thanks.

Thank you so much for posting this. I think you have explained the content very well. Great job!

Brilliant. This should be on the curriculum of any one taking the role of lead placement and what they do and the areas of the heart they read. Certainly helps me understand a bit more.

Thanks very much ,God bless you Dr Campbell it has taken me many years to understand ECG leads

Thank you so much for this video. I have read the beginning of that stupid orange EKG book so many times and it never made sense. After watching your video once I totally understand!

This is the only video I found on KZfaq that had this specific information. Thank you!!

V nicely explained..I had never been educated like you have doctor… THANK YOU!

OMG you are such a great teacher.. Lot of respect from Pakistan

Such a nice explanation all these years I was reading and reading but couldn’t get , finally I got it by seeing ur video .

thank you for explaining this in a form that is much easy to understand than my textbook.

Thank you so much Dr, i love how clear you explain for us, expect from you

Thank you!!!!!! For making it so simple and clear....tried with lot other videos but couldn't...finaly

Lastly, a very informative and simplified video Thank you

This is absolutely brilliant....this literally cleared up every problem I had with understanding ecg!!!

Sir, I thank you very much.you are a very good teacher.you made this difficult topic very easy under 10 minutes.

Best explanation ever, thank you so much!!!!

Thank you so much. I was beginning to think I would never get this! Have not seen an explanation like yours before. I am happy now!

I never knew... I could understand it so well... Without opening my book 📖. 😂😂😂

Such an excellent explanation, I really understood your way of teaching. Thank you❤️

Thanks so much, I am working in a coronary care unit on clinical placement at present and ECGs are going to be the death of me..... this is a great simple explanation. Thanks again

Thanks! finally I understand how EKG works. You’re the BEST!!!!!❤

Thank you so much, my exam is tomorrow!! This helped so much

This is the best ECG video on views of the heart that I have ever found, thank you so much!!!

Becoming much clearly than my own images. Now to draw this on the heart. These are a dissection of the heart anterior-posterior angles. Thank you!

Such a fantastic teacher, explains cardiology simply but in such an understandable way,thank you so much

Cudos Doc, you're eloquent and clear...

Thank you!!! You’re Amazing at explaining this stuff

You have very unique method to teach E C G in easy way.

Made it so easy to comprehend. Thank you!

Sir , your lectures are very helpful.thanks a lot sir.wish you n your family good health n wealth.👍👍👍👍

Best explanation ever, clear, concise, I get it now!

Happy new year dr Campbell you have very clearly explained the position of ECG LEADS THANKS 01/01/2020

FANTASTIC explanation! Thank you!!

thank you so much!!! - i've been finding info on books and youtubes about this !! and now finally!! - Phew! - thank you so much! - well done!