Five additional family members had short PR intervals with normal QRS, and eight other family members had borderline short PR intervals.
The most common tachycardias include AV nodal reentry, accessory pathway mediated tachycardia, atrial fibrillation, atrial flutter, and ventricular tachycardia. [23, 26] To
PR interval. ( 836114 ) Brodsky M....Rosen K.M. 1977 23 Intermittent bundle-branch block in patients with accessory atrio-His or atrio-AV nodal pathways.