During the ablation procedure, mapping electrograms using circular mapping catheter and provocative maneuvers such as administration of isoproterenol in incremental doses are commonly used to aid in identification of pulmonary vein (PV) and non-PV triggers. In addition, areas with complex fractionated atrial electrograms (CFAE) are identified and eliminated by ablation. In patients with LSP, inclusion of PV and non-PV triggers as ablation targets, improves the procedure outcome.