Figure legend
Persistent SVC isolation with RSPV isolation. (A) Sustained SVC fibrillation was confirmed irrespective of sinus rhythm in other electrocardiograms (lead II, the RA and CS). (B) Voltage mapping of the SVC, RA and LA. Low voltage area around the SVC was consistent with that around the RSPV. CRA: cranial, CS: coronary sinus, LA: left atrium, RA: right atrium, RAO: right anterior oblique, LAO: left anterior oblique, LIPV: left inferior pulmonary vein, LSPV: left superior pulmonary vein, RIPV: right inferior pulmonary vein, RSPV: right superior pulmonary vein, SVC: superior vena cava.