Table 3.

Characteristics of patients with triggers or targets identified after isoproterenol infusion

Patient	Trigger or target	Arrhythmia induced	Location	Additional comments
1	Trigger	Premature atrial contractions triggering atrial fibrillation	Antral left upper pulmonary vein
2	Trigger	Premature atrial contractions	Lower right septum, right upper pulmonary vein and right atrium	Abandoned due to proximity to sinus node and phrenic nerve
3	Target	Reconnection	Left pulmonary veins
4	Trigger	Premature atrial contractions triggering atrial fibrillation	Posterior antrum of left upper pulmonary vein	Unable to completely ablate due to esophageal temperature rises
5	Target	Reconnection	Right lower pulmonary vein	Reconnection of pulmonary vein
6	Target	Atrial fibrillation	Left lower and right upper pulmonary veins	Reconnection of pulmonary veins
7	N/A	Atrial fibrillation	N/A	Terminated via direct current cardioversion
8	Trigger	Premature atrial contractions	Right atrium	Atrial ectopy, no further ablation pursued
9	Trigger	Premature atrial contractions	Right pulmonary vein carina
10	Trigger	Supraventricular tachycardia	Right atrium	Near sinus node
11	Target	Reconnection	Left pulmonary veins	Reconnection