BACKGROUND: The remote magnetic navigation system (MNS) has been used with a nonirrigated magnetic catheter for atrial fibrillation (AF) ablation. The objective of this study was to evaluate the feasibility and efficiency of the newly available irrigated tip magnetic catheter for index pulmonary vein isolation (PVI) in patients with paroxysmal AF (PAF). METHODS AND RESULTS: Between January 2008 and June 2009, 30 consecutive patients with drug-resistant PAF underwent circular mapping catheter-guided PVI with MNS (MNS group). The outcomes were compared retrospectively with those of a conventional hand-controlled ablation technique during the same period in 44 consecutive patients (manual group). All 4 pulmonary veins were successfully isolated in both groups except in 4 patients in the MNS group. Radiofrequency and procedure duration were higher in the MNS group (60 ± 27 versus 43 ± 16 minutes; P = 0.0019) than in the manual group (246 ± 50 versus 153 ± 51 minutes; P < 0.0001). In the patients who underwent only PVI, total fluoroscopic time also was longer in the MNS group than in the manual group (58 ± 24 versus 40 ± 14 minutes; P = 0.0002). At 12-month follow-up after a single procedure, 69.0% of the patients in MNS group and 61.8% of patients in manual group were free of atrial tachyarrhythmia without antiarrhythmic drugs. There was no significant difference in the atrial tachyarrhythmia-free survival between the 2 groups (P = 0.961). Cardiac tamponade occurred in 1 patient in the manual group. CONCLUSIONS: In patients with PAF, MNS-guided PVI with the newly available irrigated tip magnetic catheter backed up with manual ablation whenever required is feasible. However, it requires longer ablation, fluoroscopy, and procedural times than the conventional approach in the early experience stage.
BACKGROUND: The remote magnetic navigation system (MNS) has been used with a nonirrigated magnetic catheter for atrial fibrillation (AF) ablation. The objective of this study was to evaluate the feasibility and efficiency of the newly available irrigated tip magnetic catheter for index pulmonary vein isolation (PVI) in patients with paroxysmal AF (PAF). METHODS AND RESULTS: Between January 2008 and June 2009, 30 consecutive patients with drug-resistant PAF underwent circular mapping catheter-guided PVI with MNS (MNS group). The outcomes were compared retrospectively with those of a conventional hand-controlled ablation technique during the same period in 44 consecutive patients (manual group). All 4 pulmonary veins were successfully isolated in both groups except in 4 patients in the MNS group. Radiofrequency and procedure duration were higher in the MNS group (60 ± 27 versus 43 ± 16 minutes; P = 0.0019) than in the manual group (246 ± 50 versus 153 ± 51 minutes; P < 0.0001). In the patients who underwent only PVI, total fluoroscopic time also was longer in the MNS group than in the manual group (58 ± 24 versus 40 ± 14 minutes; P = 0.0002). At 12-month follow-up after a single procedure, 69.0% of the patients in MNS group and 61.8% of patients in manual group were free of atrial tachyarrhythmia without antiarrhythmic drugs. There was no significant difference in the atrial tachyarrhythmia-free survival between the 2 groups (P = 0.961). Cardiac tamponade occurred in 1 patient in the manual group. CONCLUSIONS: In patients with PAF, MNS-guided PVI with the newly available irrigated tip magnetic catheter backed up with manual ablation whenever required is feasible. However, it requires longer ablation, fluoroscopy, and procedural times than the conventional approach in the early experience stage.
Authors: Dirk Vollmann; Lars Lüthje; Joachim Seegers; Christian Sohns; Samuel Sossalla; Jan Sohns; Christian Röver; Gerd Hasenfuß; Markus Zabel Journal: J Interv Card Electrophysiol Date: 2014-06-04 Impact factor: 1.900
Authors: Jakob Lüker; Arian Sultan; Boris Hoffmann; Benjamin Schäffer; Doreen Schreiber; Özge Akbulak; Stephan Willems; And Daniel Steven Journal: J Atr Fibrillation Date: 2013-10-31
Authors: Abhishek Bhaskaran; M A Tony Barry; Sara I Al Raisi; William Chik; Doan Trang Nguyen; Jim Pouliopoulos; Chrishan Nalliah; Roger Hendricks; Stuart Thomas; Alistair L McEwan; Pramesh Kovoor; Aravinda Thiagalingam Journal: J Interv Card Electrophysiol Date: 2015-06-30 Impact factor: 1.900
Authors: Tilman Maurer; Christian Sohns; Sebastian Deiss; Laura Rottner; Peter Wohlmuth; Bruno Reißmann; Christian H Heeger; Christine Lemes; Johannes Riedl; Francesco Santoro; Shibu Mathew; Andreas Metzner; Feifan Ouyang; Karl-Heinz Kuck; Erik Wissner Journal: J Interv Card Electrophysiol Date: 2017-06-10 Impact factor: 1.900