Understanding Cardiac Axis and Deviations - 12-Lead EKG

Breaking down the concept of cardiac axis and how to determine it.

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0:00 Introduction
2:46 Vectors (Direction of Electrical Activity)
4:14 What is Cardiac Axis?
5:54 Limb Leads Review
9:07 Hexaxial Reference System
10:54 Cardiac Axis Determination
14:26 Left Axis Deviation (LAD)
17:11 Right Axis Deviation (RAD)
19:24 Extreme Axis Deviation (EAD)
20:58 Conclusion

#ICUAdvantage #EKG #CardiacAxis

[idontbekaren]

Nobody else has broken it down into such simple terms. This video has blown my mind and changed my life ❤

[SeemaSharma-cbgd]

Thank you so very much you own my life buddy i feel so emotional today

[TheKasiegel]

Amazing explanations! Super clear and easy to follow. Thank you for helping me build a solid foundation!

[doctoralam]

"ECG made easy" perfect book to understand basics of 12-leads ekg

[thitran]

Probably the clearest explanation of axis deviation on ekg I’ve ever seen. Thank you so much!

[athenaellis]

Omg! I love you! I was completely confused and lost, watched 10 other videos and couldn't grasp this, did it! I understand it now! Thank you so much for your easy to grasp concept of the axis deviation! You're awesome! Wish you were my professor! Thank you!

[none_of_your_business]

Finally a video that I can understand what's going on at the 12 leads!The explanations are real clear I love it !!!🥹🥹

[jerronconway]

I am currently going to AEMT school and this is just perfect timing for me. Thank you!

[ingothitrust]

I learned 2 different methods as a medic and as an ICU nurse. I always found the perpendicular method a tad bit more cumbersome by comparison. Instead, I use leads I and aVF to determine the axis by the mnemonic...

RIGHT TOGETHER; LEFT APART.

Right together meaning if lead I's deflection is mostly negative while aVF's deflection is mostly positive, per using the cartesian plane, it will let you know that the axis is somewhere between +90 and +180 degrees (R-waves pointing together or are RIGHT TOGETHER).

Left together means if lead I's deflection is mostly positive while lead aVF is mostly negative, per the cartesian plane, the axis is somewhere between 0 and -90 degrees. And to differentiate between physiological (non-pathological) vs pathological left axis deviation, look at lead II, if it's mostly negative, your axis is an LAD, while if it s isoelectric, it is just at the border of -30 degrees (R-waves point apart, or are LEFT APART).

Then again, it does require some retraining of how we traditionally view the cartesian plane as far as positive and negative is concerned, but that is what works for me.

[imhritan]

You're really awesome...so many tips and tricks that are so important☺️....Love from India 🇮🇳❤️

[olivebada]

Thank you so much. Best video and really clear easy to understand explanation. U are so talented

[jinyizhu]

Thank you so much for the clear explanation! I have a question about the last EKG. If the perpendicular lead here is avR and it is positive, then why are you taking the -150 instead of +30?

[Steven_Dunbar]

I am taking paramedic cardiology and we just learned axis deviation but the method we learned is different. If lead 1 and Lead aVF both have a positive reflection then there is no axis deviation. If lead 1 has a positive deflection but lead aVF has a negative deflection then there left deviation. If lead 1 and lead aVF both have a negative deflection then there is extreme axis deviation. If lead 1 has a negative deflection but lead aVF has a positive deflection then there is right axis deviation. What do you think?

[Steven_Dunbar]

What is the purpose of identifying whether axis deviation is present?

[lubnak]

How it is -150 when aVR has
positive deflection. Isnt it +30.plz replay

[beatsofeden]

I wish I came across this video earlier

[ThanhVu-txqm]

So nice voice, imagine you are a very handsome man ❤