Feasibility of remote magnetic navigation for epicardial ablation
A 29-year-old male with frequent palpitations underwent three unsuccessful RF ablation procedures of a left-sided accessory pathway. Mapping ablation catheters were introduced epicardially and retrogradely in the left ventricle. After 39 unsuccessful ablation attempts with a mean energy of 27 W, thorough epicardial mapping revealed the earliest atrial retrograde activation site in the left lateral aspect of the mitral annulus.\nA single RF application at the corresponding endocardial site by the retrograde catheter abolished the conduction over the accessory pathway. The post-procedural period was uneventful and he was discharged without antiarrhythmic medication. In his 3-month follow-up he was completely free of arrhythmias.