the P wave morphology would be different from the normal sinus P wave morphology. When every other QRS complex is a premature atrial contraction, then the rhythm is referred to as “atrial ...

The regular arrhythmia occurring at the beginning of the electrocardiogram was identified as ventricular bigeminy. Single ventricular premature complexes (VPCs), as well as pairs and triplets of ...

A premature atrial contraction (PAC ... Meaning originating outside of the SA node. Thus the P wave morphology would be different than the normal sinus P wave. They are narrow complexes.