Remote magnetic navigation vs. manual navigation for catheter ablation of outflow tract premature ventricular contractions
YUAN Hong-tao
ZHANG Yu-xiao
LAN Kai
PENG Li
XUE Qiao
LU Cai-yi
Abstract：Objective To investigate the efficacy and safety of mapping and ablating premature ventricular contractions (PVCs) originated from ventricular outflow tract using remote magnetic navigation system (MNS, Niobe III, Stereotaxis) vs. manual navigation.Methods 68 consecutive patients diagnosed as outflow tract PVCs from Oct 2014 to Jan 2017 were enrolled in our study, the mean age was 43±13 years and 38±12 years in MNS group and manual group, respectively. Mapping and ablating were performed by MNS or CARTO 3 system. The operative efficacy, safety and other relevant clinical data were compared between the two groups.Results There was no significant difference between two groups according to clinic profiles. The acute success rate was 93.9% (31/33)vs. 91.4% (32/35) (P>0.05), respectively. Total procedure time and ablation time was (125±45 minvs. 105±40 min, P>0.05), and (270±60 svs. 240±55 s,P>0.05), respectively. The power was much higher in MNS group than that in manual group (40±10 Wvs. 25±5 W, P<0.05). MNS group had less fluoroscopic time than manual group (1.2 ±0.5 minvs. 3.2±1.2 min,P<0.05). Both groups had no severe complications.Conclusion The Niobe III remote magnetic navigation system for mapping and ablation of outflow tract PVCs is effective and safe. Furthermore, it may reduce the exposure time from radiation for both patients and physicians. But higher power maybe needed.
Keywords：Magnetic navigationCatheter ablationOutflow tractPremature ventricular contraction
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 566-568 )