This series has been updated and moved.
Making Sense of Sgarbossa’s Criteria – Chest Pain and Left Bundle Branch Block – Part 1
Making Sense of Sgarbossa’s Criteria – Chest Pain and Left Bundle Branch Block – Part 2
Making Sense of Sgarbossa’s Criteria – Chest Pain and Left Bundle Branch Block – Part 3
I absolutely love your educational style, I’ve learned a lot from you…and I have a solid background in cardiovascular health! Anyway, I need clarification. When describing the content in the illustration labeled “Scarbossa’s Criteria” (2nd from last), you write
“The first example shows > 1 mm of concordant ST segment elevation (and a concordant T wave). Both are abnormal for LBBB.”
The QRS illustrated is indicative of RBBB.
My next concern is the following quote:
“If you have a patient with signs and symptoms consistent with ACS and the ECG shows LBBB with concordant ST segment elevation, then chances are excellent that you are dealing with a STEMI.”
Assuming that we’re looking at lead V1, I thought that LBBB will show a negatively-deflected QRS? If this is the case, how can there be “concordant” ST elevation?
These will probably be cleared up easily, but I had to ask. The terms “dis/concordant” are new to me, so I want to make sure I understand them. If possible, could you email your response to this? I don’t always have time to check the website out, but I do check email regularly.
Thank you again for your excellent commentary! I look forward to reading more of your contributions, and look forward to increasing my cardiovascular knowledge. EXCELLENT JOB!!!
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