Fig. 2From: Cryoballoon ablation for paroxysmal atrial fibrillation in a case of persistent left superior vena cavaLAO: Coronary sinus and left superior vena cava (LSVC) course demonstrated through angiography. Mapping of the atrial trigger activity in LSVC by using a spiral decapolar catheter. A quadripolar ablation catheter was placed in the right vena cavaBack to article page