Utility of high density multielectrode mapping during ablation of scar‐related ventricular tachycardia

Abstract

High-density multielectrode mapping is associated with a significant reduction of procedural and mapping times and a significant increase of mapping density without affecting outcomes in patients with scar-related VT.

High-Density Mapping in Ventricular Tachycardia Ablation: A PentaRay® Study

“…Hence, we could shorten the procedure duration by 13 min (in mean 174 min starting with the PentaRay ® , and 161 min in the latter cases), the mapping time by 10 min (in mean 49.1 and 39.5 min, respectively), and the fluoroscopy time by 8 min (in mean 21.8 and 13.5 min, respectively). Thus, our procedure duration and mapping times are still below those of Cano et al [ 18 ], who needed 189 ± 56 min for the procedure and 44 ± 20 min for mapping. As has been emphasized recently [ 18 , 20 ], the reduction of mapping and procedural time in this context is of great value considering that the hemodynamic stability of these patients may be easily disrupted with longer procedures.…”

“…Thus, our procedure duration and mapping times are still below those of Cano et al [ 18 ], who needed 189 ± 56 min for the procedure and 44 ± 20 min for mapping. As has been emphasized recently [ 18 , 20 ], the reduction of mapping and procedural time in this context is of great value considering that the hemodynamic stability of these patients may be easily disrupted with longer procedures. Recent multicenter VT ablation studies have reported mean VT ablation procedure times ranging from 240 to 263 min, which are significantly longer when compared with the procedural times described in our series [ 21 , 22 ].…”

“…The focus was not on the comparison of multielectrode mapping catheters with linear catheters as other authors did recently [ 5 , 16 , 17 ]. In our opinion, the only comparable study in the current literature focusing the same issue of clinical utility of the PentaRay ® was recently published by Cano et al [ 18 ]. In addition, we offer an offline analysis of the EAM created with the PentaRay ® .…”

Catheter ablation of ventricular arrhythmia guided by a high‐density grid catheter

“…This study is reporting on the clinical use of the HDG and BDA in catheter ablation of VAs. The study conveys the following new findings: Integration of an equally spaced grid catheter with an EAM system is safe and feasible for substrate identification in a heterogeneous group of patients with VAs. Time to create HD substrate or activation maps is similar in comparison with other MEM catheters 1,2,5,8,11,16–20 Points used and points collected differed significantly, underpinned by the BDA whereby the largest bipolar V p‐p is selected independent of depolarizing wavefront and catheter orientation.…”

“…Time to create HD substrate or activation maps is similar in comparison with other MEM catheters 1,2,5,8,11,16–20 …”