Which of the following is a characteristic of left bundle branch block?
A. Neither ventricle depolarizes normally because the impulse is not conducted through the left bundle branch.
B. Neither ventricle depolarizes normally because the impulse is not conducted through the right bundle branch.
C. The left ventricle depolarizes normally, but the impulse is not spread to the right ventricle.
D. The right ventricle depolarizes normally, but conduction through the left ventricle is slowed.
Answer: D
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