Premature ventricular contraction (PVC) is a type of abnormal heartbeat, or arrhythmia. It happens when the heartbeat begins in the lower, rather than the upper, heart chambers. This creates an ...

In Figure 1 below, a wide QRS regular tachycardia is present. Pay attention to the premature ventricular contraction (PVC), then answer the question.

Pay attention to the compensatory pauses after the premature ventricular contraction (PVC) (denoted by ↑) in tracing “b” of Figure 1, then answer the question below.