From Basics of 12 Lead ECG to How Waves are Produced: Everything about Normal Electrocardiogram

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Everything Normal Electrocardiogram: From Getting 12 Lead ECG to How Normal Waves are Produced | Normal EKG | Normal ECG
An electrical meter or a lead, records the potential at its positive end as compared to the negative end. If it's at a positive potential, it shows a positive reading. And if it's at a negative potential, it shows a negative reading. If the potential on both ends is the same, it shows no reading. It can record only that portion of the electrical activity that falls parallel to the direction of the electrode placement. The perpendicular activities, are not recorded. In the heart, the activities happen in many directions in three dimensions. So for better mapping of these activities, we use multiple leads. Three standard-bipolar limb·leads are created on the coronal plane, by connecting electrodes at both arms and the left leg. These three connections represent the tips of Einthoven's triangle around the heart. 3 augmented-unipolar limb·leads are created using the same electrodes. Each augmented lead, uses one of these electrodes as the positive end, and a combination of the remaining two as a negative end. For 6 chest·leads or precordial·leads on the transverse plane, a positive electrode is placed on the chest, at different points around the heart. And they all use a common negative connection obtained by combining all three electrodes on the limbs. This is equivalent to putting their negative electrodes in the middle of the heart. Each of these 12 leads records the heart's activity from a unique angle. So some areas are better recorded in some leads than others. In normal ECG, the P wave is produced by atrial depolarization, the QRS complex is produced by ventricular depolarization. Atrial repolarization occurs along with the QRS complex, so it's obscured. Ventricular repolarization produces the T wave. Different intervals studied in ECG are the P-Q interval or PR interval, QT interval, ST segment, and RR interval.

Chapters:
00:00 Intro
00:38 Basics of Recording Electrical Activity
07:57 12 Lead ECG: Introduction
09:11 Standard Bipolar Limb Leads
11:45 Augmented Unipolar Limb Leads
13:26 Unipolar vs Bipolar Lead: The Difference
13:51 All Leads on Frontal Plance: A Summary
14:25 Precordial Leads (Chest Leads)
15:51 12 Leads: Summary and Importance
17:46 How Normal ECG Waves are Produced
25:27 Intervals and Segments in ECG
26:54 Summary

Dr Vipul Navadiya
Nonstop Neuron
Medical Animation
Medical Animation Videos
Physiology

DISCLAIMER: This video is for education purposes only. Although every effort is made to ensure the accuracy of the material, viewers should refer to the appropriate regulatory body/authorized websites, guidelines, and other suitable sources of information as deemed relevant and applicable. In view of the possibility of human error or changes in medical science, any person or organization involved in the preparation of this work accepts no responsibility for any errors or omissions, or results obtained from the use of information in this video.

[fas]

I am a practicing Dr and I have never seen such a nice video ever on ECG, congratulations 🎉🎉🎉

[sameerchandorkar]

Never saw anything like this whole career of 30 years. Kudos to you. Explanations like this in medical school could make the life of students so simple. Please keep up the fantastic work. 🙏🙏

[ksivasankaram]

I am an Engineer and I am 80 years of age. I have viewed number of videos on ECG and also referred to a few text books. After following for a while I get lost and stop further reading or postpone watching. This video is so clear that I could follow till the end without fatigue. Looks like this is created by a technical person. it is excellent.

[MonishR]

Comparatively the best Ecg explanation in Youtube !

[sukinator]

Has to be one of the best explanation of ecg. Better than any text book I've read

[cameronbradley]

I have been a RN for about 1.5 years and wanted a deeper understanding of EKG readings. This was AMAZING. So clearly explained and so easy to follow visually. This has helped me so much, and I look forward to using this in my clinical practice. THANK

[nabarunghoshal]

Good description. I like to add one thing about the AV node. The isoelectronic line represening the AV node conduction represents one more thing than simply the lack of potential. It represents the delay in conduction caused by the slow calcium channel instead of the fast sodium channels in the other parts of the heart. This delay is called 'the nodal delay' that is needed to give the ventricles a time to dilate while the atria are contracting. Otherwise, the atria and ventricles would contract simultaneously and the blood will not go to anywhere from anywhere. Thank you.

[damlaylmaz]

Wow! I am a seccond year medical student and I could not understand anything from my professor(because he just read the slides) and I felt that I am idiot but thanks to you I understand everything. Thanks a lot!!

[rajnikantbhatt]

This demo is Not only for RPN, DR's or students.Everyone who is interested in GK must watch and digest this video.This subject has never been demostrated like this in any Lecture or vedios.Thanks to the originator.

[lananhnguyen]

That makes so much sense. I memorized many different interpretations of EKG abnormalities, but I always felt like I didn't really grasp the basics, even after watching tons of videos and reading a lot. You explained it so clearly, literally made me cry for joy. Thank you so much!

[tanvirtaswar]

This one is huge❤thx a lot for this one.

[lorenzoor]

I'm not a healthcare professional but wanted to understand the rationale behind the ECG science.... Never seen such nicely and detailed explanation of the 12 lead ECG theory. Love it!

[punpor]

This is very well presented how electrical knowledge used in cardiovascular detection. Thank you.

[suchandrabhattacharjee]

Excellent. Never found such an thorough explanation.

[MADXBLU]

Amazing video! great job! One of the best ECG videos i EVER watch. If you continue to break down medical topics as basic and easy to understand and make this your “trademark voice”, i bet you will gain so much more subscribers. Your channel is a hidden gem 💎 I Subscribed for sure. And I LOVE the animation!!! 👍

[lucyjohn-sb]

video....short and fully packed...nice job sir

[mugiwara]

Huge thanks, love all your explanations

[set]

Nice video. But the wave presented was only from lead II. Should have also added charts showing the different wave forms of all 12 leads of a 12 Lead ECG of the same person.

[royolarn]

You deserve all the accolades other viewers have already showered upon you. Thank you so much for such an amazing and wonderful educational video.

[karsevak.hanuman]

Part two . About irregularities

Also video on CT scan, ultrasound