Heart Blocks Explained - First, Second, Third Degree and Bundle Branch on ECG

This video includes 1st degree heart blocks, 2nd degree heart blocks (Mobitz type 1 or wenckebach, mobitz type 2), 3rd degree heart blocks (complete heart block), hemiblocks, bundle branch blocks, 2:1 heart block, and more. Also, learn the pathophysiology of heart blocks as they relate to the SA node, AV node, ventricles, and atrium.

See the complete ECG Interpretation course. Confidently interpret EKGs and EKG rhythms in a systematic way, including:

- The physiology of the heart
- EKG leads and vectors
- Leads and EKG paper
- The ECG tracing
- EKG waves, complexes, and intervals (p waves, QRS complexes, PR interval etc.)
- Axis on EKG and precordial leads
- The autonomic nervous system and the heart
- Heart rate and automaticity on the ECG
- The R to R interval
- Rhythm, arrhythmias, and escape rhythms,
- Premature beats and pauses on EKG
- Bigeminy, trigeminy, and tachyarrhythmias
- V-tach and torsades de points
- Atrial and ventricular flutter
- Atrial fibrillation and ventricular fibrillation on ECG
- Heart blocks and escape rhythms (1st, 2nd, and 3rd degree heart block)
- Bundle branch blocks, hemiblocks, and fascicular blocks
- Hypertrophy (LVH) and atrial enlargement
- COPD, PE, Hyperkalemia, Digoxin and the EKG
- How to systematically read an EKG (and what a normal ECG looks like)
- Many practice EKG (that Dr. Seheult interprets step by step)
- EKG quizzes follow each video.

This video is part of the "MedCram Remastered" series: A video we've re-edited & sped up to make learning even more efficient.

Most of our medical lectures and quizzes are not on YouTube.

Speaker: Roger Seheult, MD
Clinical and Exam Preparation Instructor
Board Certified in Internal Medicine, Pulmonary Disease, Critical Care, and Sleep Medicine.

MedCram = More understanding in less time

Recommended Audience - Medical professionals and medical students including physicians, nurse practitioners, physician assistants, nurses, respiratory therapists, EMT and paramedics, and many others. Review and test prep for USMLE, MCAT, PANCE, NCLEX, NAPLEX, NBDE, RN, RT, MD, DO, PA, NP school and board examinations.

More from MedCram medical lectures:

Produced by Kyle Allred PA-C

#MedCram #ECG #HeartBlocks

Please note: MedCram medical videos, medical lectures, medical illustrations, and medical animations are for medical education and exam preparation purposes, and not intended to replace recommendations by your doctor or health care provider.

[kimberlyevans]

Compared to other tutorials, I find that EXTREMELY helpful because of the way it is taught here.

[thelegendgamer]

I dont say this often byut you explain phenomenally!!

[ddmmzzmm]

Helps you a lot with 1 and 2 blocks, 3 and other missing though. Very interesting, thanks for sharing.

[robinkrajcik]

You are awesome. Explained in a way that was not taught in school.

[mq]

Thank you very much for this lecture. You explain concepts so well. I'm watching this on loop as I prepare for the CVRN-BC exam

[ashtynphilipsheck]

Came across this video while studying for my EKG practical exam. Was curious about your page and figured out you went to the medical school I currently attend. So cool! Thank you!

[jangtank]

The explanation is phenomenal, thank you for that.
But the title of the video and the description is extremely misleading. This video DOES NOT cover 3rd degree AV blocks, BBB, or hemiblocks.

[cheriechen]

I can't seem to find the video on 3rd degree heart block....

[AnonymousOnimous]

I just got diagnosed with Wenckebach. My doctor couldn't tell me things like if this will progress to Third Degree Heart Block, if I'll need a pacemaker, or if if this will shorten my lifespan. I'm 28.
So thank you for explaining this. I feel better the more I hear that this condition doesn't usually worsen.
I'm still seeing a cardiologist, but it could be a while.

[zahidamunawar]

Dr Sehult, your description is excellent. Can you kindly make the pointer more prominent bcz I was struggling to locate the pointer. Thank you .

[Kuptius]

I swear ur the most amazing explanation ever, I totally searched a way to understand this by many videos and even by my own academic professor, still couldn't get it except by u, tysm ❤❤❤

[julesjma]

This is SO helpful! Thank you so much for sharing your videos. They have saved me many times over.

[howtomedicate]

Great in depth video! I learned a lot. Thabk you 👍🔥

[ezmed]

Wow, your lectures are really informative. They really encourage me to make more videos for Medical students on my channel. Def subscribing

[anonymousAAA]

Excellent video! But can't find the link for 3rd degree explanation

[barbarab]

Very good presentation. Watching this feeling concerned here. Last week I had a high resting heart rate that didn’t settle down for a few hours and for some time was in the 125-145 bpm range. I saw my doctor today and was sent for an EKG. Result was just posted online, stating type 1 AV block and otherwise normal EKG. I’ve had a crazy stressful 6 months at work, with working basically 12 hours/day for the last 3 months. All very fast paced corporate environment. Been eating poorly and no exercise in 3 months. I’m sure my doctor will call me in the morning (and had already ordered a 24-hour holter), but have some questions: (I am 46F) 1) Is this something that can go away? 2) How is it treated? 3) Can this be caused by stress? 4) Is there an actual blockage that would require a stent? 5) Can I continue exercising? I love to go to the mountains to hike and kayak, but those are areas with no cell phone reception. Would this make me have to stay nearer the city? 6) What percentage of 1st degree AV blocks progress to become worse? EKG results: HR 53, P axis 38 degrees, QRS axis 21 degrees, T axis 17 degrees, QT 485 ms, QTC 473 ms, QTD no value, QRS complexes 90 ms, PR 0 ms, PQ 211 ms, P 102 ms.

[ashrafdowla]

Very helpful and informative. Thanks a lot.

[hosnielian]

Much appreciated your effort.. keep up the greatness✌

[cherrylicious]

what happened to the continuation of the explanation of the cell?? (went from video 1 to video2 in the playlist, & it jumped from cell & polarization to heart blocks).... 🤔

[gauravpr]

Beautifully explained! Thank you @MedCram-Medical Lectures