Noncontact mapping for radiofrequency ablation of complex cardiac arrhythmias

Radiofrequency (RF) catheter ablation is the current treatment of choice fo r several cardiac arrhythmias. The conventional approach utilizing intracar diac electrograms during sinus rhythm and during tachycardia has inherent l imitations, including limited two-dimensional fluoroscopic imaging and limi ted ability to evaluate several potential sites for ablation then go precis ely to the most suitable site. Recently, a noncontact mapping system has be en developed that can be used to perform single beat high resolution mappin g of cardiac arrhythmias. In this report, we describe the advantage of util izing the system in facilitating a successful outcome in 5 patients with di fferent complex arrhythmias.