High-density open window mapping vs conventional mapping in accessory pathways ablation

Abstract Funding Acknowledgements Type of funding sources: None. Background and purpose High density (HD) mapping is associated with a reduction in fluoroscopy time compared to conventional accessory pathway (AP) ablation. The Open Window (OW) technique (CARTO 3, Biosense Webster) new tool that automatically uses electrophysiology criteria for AP location, as shorter local EGM AV interval (extended early meets late tool), earliest activation (LAT) annotation at unipolar signal (wavefront annotation). However, no studies comparing its feasibility have been conducted. Therefore, the aim present study was assess clinical implications high-density OW when HD mapping. Methods A prospective, unicentric cohort Consecutive patients which were referred our institution ablation included recent retrospective who underwent Total time, total rate recurrence between groups. Results 29 consecutive (32.28 ± 18 years, 58% males) group (29.6 52% An example Right Superior showed figure 1. No differences location observed (p=NS). lower (29.3 vs 37.8 min; p=0.04), (14.3 21.3 p= 0.04) radiofrequency (p=0.007). After median follow up 6 months, there conduction groups schematic step by graphic workflow procedure represented 2. Conclusions In experience, feasible X-ray exposure more should be performed corroborate these conclusions.