Preexcitation

Multiple Choice

Preexcitation:

A) leads to a delayed depolarization of the ventricles.
B) occurs when an impulse arises from a supraventricular site and travels through the AV node to the ventricles more quickly than normal.
C) leads to a longer than normal PR interval.
D) produces a characteristically abnormal slurring at the onset of the QRS complex and a short PR interval.