Magnetic guidance versus manual control: comparison of radiofrequency lesion dimensions and evaluation of the effect of heart wall motion in a myocardial phantom

Abstract

The lesion dimensions were larger with MNS compared to MC in the presence of simulated wall motion, consistent with greater catheter stability. However, similar lesion dimensions were observed in the stationary model.

Robotic navigation shows superior improvement in efficiency for atrial fibrillation ablation

“…In RMN, two magnetic platforms are utilized to remotely guide the movement of the ablation catheter by magnetic fields [13,14] . Various publications reported on the benefits of RMN due to precision of catheter movement, its soft tip and its stability, causing superior lesion formation [15] and improved procedural safety [16,17] . However, the disadvantages of RMN guided RF ablation were the prolonged ablation and procedure times and increased operator learning curve [18,19] .…”

Catheter Ablation of Ischemic Ventricular Tachycardia With Remote Magnetic Navigation: STOP‐VT Multicenter Trial

“…The lesion dimensions of RMN-based ablation appear to be fully comparable with manual catheter ablation in a canine beating heart or moving phantom model. 10 RMN-based ablation has also proved to be safe for VT ablation in the clinical setting.…”

“…The lesion dimensions of RMN-based ablation appear to be fully comparable with manual catheter ablation in a canine beating heart or moving phantom model. 10 RMN-based ablation has also proved to be safe for VT ablation in the clinical setting. 11 The ease of safe ventricular mapping with the RMN system 12 may lead to better utilization of catheter ablation of structural VT, and has the potential to standardize and increase availability of complex VT ablation procedures beyond expert centers.…”

A comparison of contact force and remote magnetic navigation on lesion formation for the ablation of atrial fibrillation

“…Constant or intermittent contact produces larger or smaller lesions, respectively, despite constant RF power and identical peak CFs . Remote magnetic navigation (RMN) has been proposed as a method to overcome the problem of catheter stability . Because the real‐time assessment of pointwise lesion formation in the myocardium is not possible in clinical practice, intracardiac signal amplitude decrease and impedance drop during ablation are used as surrogate parameters to estimate the lesion dimensions …”