Introduction to ECG | The Basics | Einthoven’s Triangle, Limb, Augmented and Precordial Leads

Introductory lesson on ECGs including Einthoven’s triangle, lead placement, limb, augmented and precordial leads. Reading and understanding ECGs is an incredibly important skill in medicine. Before we can understand some of the complexities of ECG reading, it is important to understand the basics of the ECG. For instance, it is important to understand Einthoven’s triangle, which is dictated by limb lead placement. It is also important to know the limb leads and their placement along with the augmented leads and precordial leads.
If you find this lesson helpful, please consider liking, subscribing and clicking the notification bell to help support the channel.
Subscribe for more free medical lessons / @jjmedicine
-------------------------------------------------------------------------------------------------------------
For books and more information on these topics
www.amazon.com...
Support future lessons (and get other cool stuff) ➜ / jjmedicine
Follow me on Twitter! ➜ / jj_medicine
Come join me on Facebook! ➜ / jj-medicine-1006426481...
Start your own website with BlueHost ➜ www.bluehost.c...
Check out the best tool to help grow your KZbin channel (it’s helped me!)
www.tubebuddy....
-------------------------------------------------------------------------------------------------------------
Check out some of my other lessons.
Medical Terminology - The Basics - Lesson 1:
• Medical Terminology - ...
Fatty Acid Synthesis Pathway:
• Fatty Acid Synthesis P...
Wnt/B Catenin Signaling Pathway:
• Wnt/β-Catenin Signalin...
Upper vs. Lower Motor Neuron Lesions:
• Upper and Lower Motor ...
Lesson on the Purine Synthesis and Salvage Pathway:
• Purine Synthesis and S...
Gastrulation | Formation of Germ Layers:
• Gastrulation | Formati...
Introductory lesson on Autophagy (Macroautophagy):
• Autophagy | Macroautop...
Infectious Disease Playlist
• Infectious Diseases
Dermatology Playlist
• Dermatology
Pharmacology Playlist
• Pharmacology
Hematology Playlist
• Hematology
Rheumatology Playlist
• Rheumatology
Endocrinology Playlist
• Endocrinology
Nephrology Playlist
• Nephrology
----------------------------------------------------------------------------------------------------
**MEDICAL DISCLAIMER**: JJ Medicine does not provide medical advice, and the information available on this channel does not offer a diagnosis or advice regarding treatment. Information presented in these lessons is for educational purposes ONLY, and information presented here is not to be used as an alternative to a healthcare professional’s diagnosis and treatment of any person/animal.
Only a physician or other licensed healthcare professional are able to determine the requirement for medical assistance to be given to a patient. Please seek the advice of your physician or other licensed healthcare provider if you have any questions regarding a medical condition.
----------------------------------------------------------------------------------------------------
Although I try my best to present accurate information, there may be mistakes in this video. If you do see any mistakes with information in this lesson, please comment and let me know.
I am always looking for ways to improve my lessons! Please don't hesitate to leave me feedback and comments - all of your feedback is greatly appreciated! :) And please don't hesitate to send me any messages if you need any help - I will try my best to be here to help you guys :)
Thanks for watching! If you found this video helpful, please like and subscribe!
JJ

[@jenniferp2210]

Finally I can put it all together in a visual way that makes sense. I have been so confused until now! Big thanks!!

[@TotalChaos2]

I am a student from India, pursuing my Bachelor's degree in Human Physiology. This video helped me a lot to understand ECG. Love the way you explain.

[@nabilamusasoba1823]

This video just made my life way easier😭maybe CVS physiology isn't that bad.Thank you so much!

[@maahipancholi7860]

Thank uuuuuu ❤️❤️❤️

[@otuekongudofia6798]

You done a great job in explaining this.

[@samuelsmithmed214]

Great video, it's a hard concept to grasp just reading from a textbook!

[@thisuradesilva3956]

Awesome explanation, ur accent also makes it interesting, it would help me more to memorise this procedure. Thank you

[@linhylinhlol]

the way you pronounce "out" is so new to me, ive never heard it pronounced like this 😅😅😅 also thank you for the video! it was super helpful

[@jjmedicine]

Glad you found it helpful :) Haha, yes my accent definitely shines through when I use words like "out"!

[@Erlique]

I can't get over how you pronounce "out"

[@jjmedicine]

Haha...must be my Canadian accent!

[@yasoomorimoto814]

@@jjmedicine eut

[@brittophone6219]

Oh gosh Canadian accent!!! Rly 😁 but a fabulous video

[@triciaanne7273]

😂

[@sobster123]

Eowt. Lol

[@MacLaw3084]

Hey, thanks for the video. I’d like to point out that for ECG purposes it’s probably best not to refer to the cables/lead wires as “leads”; since this is a bit different than electronics. Leads are the “views” (I, II, III, aVL, aVR, etc.) created by the placement of electrodes (reference and exploring), which are connected to the cables/lead wires. Otherwise we would call the ECG procedure a 4 lead or 10 lead, since we use 4 and 10 electrodes respectively.But it’s actually a 6 lead and 12 lead. Hope that helps.

[@DeborahSenibo]

Just watched for a minutes and I already understand leads

[@amine3226]

Thank you so much!!! You explained it so well!

[@ishuadhikari7085]

Informative.Thanks a lot💙

[@Komaldhothar1234]

Very useful video 👍🏼👍🏼

[@HarveySpect]

01:36 left arm not right arm.

[@SportifyTVofficial]

i dont understand how electrode on left arm acts in one case as negative and in the other as positive

[@Fray9875]

Me too...

[@colinjohnston9824]

It's just measuring the electrical potential between the leads, so the computer detects the difference, and displays it as such (at least that's my understanding of it). If we programmed the computer differently, we could have any lead represent any polarity.

[@peterinaku5439]

It's bipolar limb leads as such 2 charges on one arm

[@11ayesharinad27]

Tysm sir u literally saved me. 😥 Physiology was about to kill me

[@rukiee.b.ovwigho5709]

You oversimplified ECG. Thanks Doc. 😇

[@jjmedicine]

Glad it was helpful! :)

[@pspdslite5991]

great video..ty

[@danielrockett4434]

Can somebody help me understand this? I've always thought that "leads" referred to the actual devices that we attach to a patient to produce an ECG reading: Now I'm taking a class on anatomy, and I learned that "lead" (with reference to an ECG) refers to a certain viewpoint of the heart. But after watching this video it looks like both are true: At 0:18 he says "The leads are placed on the right arm, the left arm..." which implies that the leads are the devices. However, a few seconds later at 0:25, he says "We can form 3 leads from Einthoven's Triangle". --- Does this mean that "leads" refers to both the wired devices of an ECG, and the viewpoints that they create?

[@jazb331]

this helped alot because i could not understand my text book what so ever

[@quickmovezed]

Easy to understand thanks

[@Raquel-cq2jf]

i learned that there are 4 limb leads RA, LA, RL, and LL why do we not include the right leg electrode in einthoven’s triangle? is it it because it is a ground electrode?

[@MacLaw3084]

Correct, it is a ground used to minimize artifact.

[@DianaGarcia-ld1wz]

the third lead is from the left arm to left leg? thought it worked counterclockwise

[@AJ4K.0]

bro why do you say out like that 🤣 great video though👍

[@Ayesha_12345]

Why in 2nd slide you show lead 1 in place of lead 3 and all positions are change of 2 and 3 also ??? Pls axplain

[@AJ4K.0]

They are vectors, thus he simply repositioned them with the beginning of the vector starting in the center of the body.

[@Ayesha_12345]

@@AJ4K.0 Thanks

[@rijjhambanerjee433]

Why current flowing from negetive to positive here in lead ?

[@MacLaw3084]

Remember that the negative electrode is the “reference” and the positive electrode is the “exploring”. The positive/exploring side corresponds with the aspect of the heart we’re “looking” at (aka a Lead). Example: Lead I is a view created by the reference electrode (negative) on the right limb, and the exploring electrode (positive) on the left limb. This right to left movement is called a “vector”. Lead 1 gives a lateral (left sided) view of the heart because of the vector. Right arm (-) --vector--> Left arm (+) = Lead I Right arm (-) --vector--> Left foot (+) = Lead II Left arm (-) --vector--> Left foot (+) = Lead III

[@iqra4397]

Thnk u😘

[@cardiyansane1414]

How come the positive and negative keep changing?

[@MacLaw3084]

Leads (views of the heart) are determined by the vector between two (sometimes 3) electrodes. A vector is the electrical potential measured in a negative to positive direction (reference electrode to exploring electrode). This is what the ECG machine is doing to produce the Leads. Lead I is a view of the lateral aspect of the heart because the right limb is being used as the negative/reference, and the left limb is being used as the positive/exploring. Lead II is a view of the inferior aspect of the heart because the right limb is being used as the negative/reference, and the left foot is being used as the positive/exploring. Lead III is a view of the inferior aspect of the heart because the left limb is being used as the negative/reference, and the left foot is being used as the positive/exploring.

[@preciousibom7484]

Is our tutor Canadian?😅

[@curtpiazza1688]

👍

[@footballhighlights722]

Eut😂

[@footballhighlights722]

Eeut😂