Bundle branch block
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Definition
Cessation of appropriate electrical conduction down either the left of right bundle branch.
Left bundle branch block
Pathophysiology
Essentially, the following can cause LBBB: aortic stenosis, dilated cardiomyopathy, MI, CAD
ECG Changes
LBBB ECG changes.
Think WiLLiaM. There's a "W" in V1 and an "M" in V6 in Left BBB.