Clinical and Electrophysiologic Characteristics Before and After Radiofrequency Ablation of Sustained Slow Atrioventricular Nodal Pathway Conduction

Two distinct PR intervals during sinus rhythm indicated the presence of dual AV nodal pathways. SSPC was promoted by a markedly impaired bidirectional conduction over the FP at critical sinus CL. SP ablation safely and effectively eliminated SSPC in symptomatic patients.