Dr. Cismaru Gabriel is an assistant professor at the Cluj-Napoca University of Medicine and Pharmacy, Romania, where he has been qualified in cardiology since 2011. He obtained his Ph.D. in medicine with a research thesis on electrophysiology and pro-arrhythmic drugs in 2016. Dr. Cismaru began his electrophysiology fellowship at the Institut Lorrain du Coeur et des Vaisseaux Louis Mathieu, France, after finishing his cardiology certification with stages in Clermont-Ferrand and Dinan, France. He began working at the Rehabilitation Hospital\'s Electrophysiology Laboratory in Cluj-Napoca in 2011. He is an experienced operator who can implant pacemakers, CRTs, and ICDs, as well as perform catheter ablation of supraventricular and ventricular arrhythmias such as ventricular tachycardia and ventricular fibrillation. He has been qualified in pediatric cardiology since 2022, and he regularly performs device implantation and catheter ablation in children. Dr. Cismaru has authored or co-authored peer-reviewed publications and book chapters on cardiac pacing, defibrillation, electrophysiological studies, and catheter ablation.