Intro to EKG Interpretation - QRST Changes

A summary of pathologic Q waves, R wave progression, ST elevation and depression, and T wave abnormalities.

[docsayedi]

Really enjoying your videos! I have a useful mneumonic for the causes of ST elevation, it is  ST-ELEVATION:

S: Syndrome (brugada)
T: Takotsubo 

E:Electrolytes (hyperkalemia)
L: LBBB
E: Early repolarization
V:Ventricular hypertrophy
A: Aneurysm
T:Treatment (pericardiocentesis)
I: Injury ( Acute MI, cardiac contusion)
O: Osborne waves ( hypothermia)
N: non-occlusive vasospasm.

[RidleyE]

Can you show an example calculation of a QRS-T angle?

As an aside, this is the absolute best series describing EKG's that I've come across. I appreciate how you break down concepts and vectors to their base level, giving students like a solid framework of which to work. I appreciate you Dr. Strong!!

[frankmaggio]

That's for making this video. I had a pt with c/p. J point elevation, Tall, broad based concave t waves. 12 lead showed concave hyper acute t waves as you showed in the video. I was told no MI! Like you said in your video (paraphrasing) do not blow off concave t waves as a normal, look at the patient/history and the complaint. Trop came back >1000. T waves improved with Nitro gtt. SUBSCRIBED!

[lehu]

Hi Dr. Eric! Thank you so much for the great content! Greetings from Germany!
I guess I'm being very picky, but in your video on bundle branch block you used the same EKG for LBBB and explained that we can see deep S waves in V1 with secondary upsloping ST elevations and prominent T waves.. here you call the S waves Q waves instead.. wouldn't it technically be a QS complex due to the lack of any upward deflections here?

[hobgoblin]

dr strong - do you have powerpoint files that accompany your lectures? that helps for review. sorry, i know i'm asking a lot. if not, i'll just screenshot key parts. these videos are better than any textbook!

[rizz]

thank you dr eric. i would like to ask about 3:32
isn't during lbbb. deep negative deflection on v1-v3 considered DEEP S WAVE? why in this video you considered them as pathological q wave?

[ChristianMCI]

Very well made videos! Thank you for your effort!

[hankgoldenshaft]

Great videos, extremely educational. Keep up the good work and thanks!

[kowalskiplota]

What do you believe are the possible causes for the delayed and absent R wave progressions in 7:16 in and 7:56 respectively, assuming the precordial electrodes have been placed correctly? I know that both the limb leads and the clinical context are missing, but I am really curious to see what people would consider with this image alone.

[MedicalNemesis]

Why isn't an old MI an etiology of low voltage? If the myocardium is replaced by scar tissue, wouldn't a severe MI lead to low voltage in some cases? Also, I am confused about when you first show a "normal" q-wave in V1 at (2:15) and then explain that a q-wave in V1 is considered pathologic. I didn't hear you explain this, but the EKG-strip above the axial section of the heart says "normal". What's the deal? Thanks again for these terrific videos!

[tarekharb]

I believe you have LAFB and LPFB q waves switched!

[nasreddinekhayati]

thank you Dr Eric. I would like to ask if myocarditis can be an etiology for low voltage (beside ST elevation) ?

[markolucijanic]

Dear dr. Strong, in your opinion, what is the cause/clinical significance of QRS notching that can sometimes be seen in one or more frontal leads when there is no RBBB? I occasionally see this in otherwhise healthy individuals. Thank you for another great video

[andonisangelov]

What is the reason for S wave in lead V6?

[elwinkristian]

Hello, i love your video and explanation. but I have a question. Is STEMI a diagnosis, or just EKG interpretation? If STEMI is a diagnosis, then how about AMI (Acute Myocard Infarction)? Please kindly answer my question. Thank you.

[albinmammen]

do you mention QT prolongation anywhere in your videos?

[amaliaangelina]

Est-ce que je peux avoir la vidéo en français merci

[mmahdyal-subari]

Can you help me with book for reading ECG easily with much abnormalities

[Mohammed-mkhy]

Ur videos give me headache 🤕
They r difficult 😞

[hmz]

Hi Dr.Eric,
What is the name of your Facebook page if you have one?
Thank you