How is the QRS complex characterized in a Junctional Rhythm?

In a Junctional Rhythm, the QRS complex is characterized as normal because the rhythm originates from the AV junction. This area is responsible for propagating electrical impulses that lead to ventricular depolarization, resulting in a QRS complex that typically appears standard in duration and morphology, similar to that observed in a normal sinus rhythm. A normal QRS duration is generally less than 120 milliseconds.

The presence of a normal QRS complex indicates that there is no interference in the conduction through the ventricles, which is often seen in Junctional Rhythm, where the primary conduction pathway remains intact, allowing for the proper contraction of the ventricles.

In contrast, other options such as widened, prolonged, or absent QRS complexes would suggest different types of dysrhythmias or conduction abnormalities, which are not characteristic of Junctional Rhythm.