A 17-year-old boy with frequent coupled unifocal ventricular premature beats having a short coupling interval and a superior frontal axis - Heart Rhythm
Premature ventricular contraction - Wikipedia
Image: Sinus Rhythm With Ventricular Premature Beats (Arrows) - MSD Manual Professional Edition
Noninvasive 3D Mapping and Ablation of Epicardial Premature Ventricular Contractions From the Endocardial Aspect of the Left Atrial Appendage | JACC: Case Reports