Zero and near zero fluoroscopy catheter ablation of premature ventricular contractions: a multicentre experience

Abstract Funding Acknowledgements Type of funding sources: None. Background Catheter ablation has become an established treatment option for premature ventricular complexes (PVCs). It is well known that the use fluoroscopy exposes patients and medical staff to potentially harmful stochastic deterministic effects ionising radiations. Purpose We sought analyse procedural outcomes in terms safety efficacy using a "zero" or "near zero" X rays approach PVCs. Methods The present retrospective, multicentre, observational study included 131 having undergone catheter PVCs zero (less than 2 minutes) between 2016 2020. Baseline characteristics population, acute success complications derived from procedure were evaluated, as recurrence rate during follow-up. Results Median age was 51.0 years old [38-63], males 77 (58.8%). Most often cause palpitations (90.0%), followed by reduced left ejection fraction (4.6%) pre-syncope (14.5%). Among 26 (19.8%) had cardiopathy. median PVC burden before 15.1% [6%-22.4%]. most frequent origin right outflow tract (n=72; 55.0%) ventricle (n=21; 16.0%), LVOT cusps (n=18; 13.7%) ,aortomitral continuity (n=7; 5.3%). A 3D electro-anatomical mapping system used all cases contact force ablation. mean maximum radiofrequency power applied 32.9 ± 4.1 W (370 s time). number applications 4.5 total time 117.3 47.5 minutes. best prematurity 31.5 ms. isoprenaline order induce 42% suppression achieved 127 (96.9%). There only complication (femoral hematoma arteriovenous fistula conservatively treated). At 12 months, complete documented 109 (83.2%), reduction other 18 (13.7%) failure recorded 4 (3.1%). Conclusion with "near-zero" safe no major good rates our multicentre experience.