What causes the inverted P wave morphology found with junctional rhythms?
A. Electrical impulses are coming from areas of multiple ectopic foci.
B. Electrical impulses are coming from the AV node, causing atrial depolarization to flow retrogradely.
C. Rapid impulses originate in the atrial tissue
D. Electrical impulses are coming from the SA node, causing repolarization.
Answer: B
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