In a left bundle branch block (LBBB), how does the QRS appear?
A)Normal in length
B)Positively deflected
C)Negatively deflected
D)Taller and deeper than normal

Question

Quizplus · Accepted Answer

In a left bundle branch block (LBBB), the QRS complex is negatively deflected because the electrical impulse is delayed in reaching the left ventricle, causing the left ventricle to contract later than the right ventricle.

In a Left Bundle Branch Block (LBBB), How Does the QRS