Great  advances have been made in nonsurgical  treatments for certain types of arrhythmias. These techniques,  including ablation and electrical cardioversion,  may restore  normal heart rhythms,  reduce or elimi- nate symptoms,  and reduce  or eliminate  the need for medications  or surgical procedures (such as implantation of a pacemaker or an internal cardioverter-de?brillator). Catheter Ablation Catheter ablation […]