Multifocal PVCs are those that
A)Have different shaped P waves preceding them.
B)Have different shaped QRS complexes.
C)Come from the same focus.
D)Resemble each other.

Question

Quizplus · Accepted Answer

Multifocal PVCs are PVCs that originate from different foci in the ventricles. As a result, they have different shapes and configurations in their QRS complexes, distinguishing them from unifocal PVCs that arise from a single focus in the ventricles. Although the preceding P waves may differ in morphology due to differences in the conduction of supraventricular impulses that trigger the PVCs, this is not a defining characteristic of multifocal PVCs. Therefore, choice A is incorrect. Choice C is also incorrect since multifocal PVCs arise from different foci. Choice D is misleading because while multifocal PVCs are not identical to each other, they may share some similarities in configuration.

Multifocal PVCs Are Those That