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

A premature ventricular contraction occurs when a focus in the ventricle generates an action potential before the next scheduled sinoatrial nodal action potential. Ventricular bigeminy occurs when ...

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.

Note the premature ventricular contraction (PVC) that triggers the AVNRT in this ECG. If a premature atrial contraction (PAC) or premature ventricular contraction (PVC) occurs at the right time, the ...