Dec 20, 2017
Know what a normal LBBB “looks” like:
1) QRS duration greater than 120 ms
2) Negative QRS Complex in V1
3) Positive QRS Complex in lateral leads (I, aVL, V5-V6)
LBBB causes a repolarization abnormality:
Consider a “repol” abnormality when there is a “general pattern of
ST discordance”, meaning the ST...