Peak frequency mapping usefulness and utilization for typical AVNRT ablation

• DOI: 10.1093/europace/euae102.273
• Publication Date: 2024-05-24T12:20:25Z
• Authors: A Handayani; D Merino; J L Merino; M Sanroman-Junquera; J Moreno; S Castrejon-Castr...; M M Cossiani; E Franco; C L Granero; J J D V Alarcpn; J Relan; S Kim
• Keywords: 03 medical and health sciences; 0302 clinical medicine; Arrhythmias and device therapy

Abstract Background Accurate identification of slow pathway for the AVNRT ablation is important to achieve successful result and avoid complications mainly AV nodal block. There were some developments produce precise image locate this such as identify low voltage bridge (LVB) using electro-anatomical mapping visualization direct capture (DCSP). The peak frequency (PF) associated with bipolar EGMs a novel parameter which may serve distinguish near filed (NF) from far field (FF) electrocardiogram (EGM) components. This technique can be used differentiate sub-components derived high density mapping. Previous study suggested appears assist in substrate differentiation, localization, contact assessment. However, approach has been never evaluated clinically Objective conducted evaluate usefulness utilization location. Method November December 2023 where twenty consecutive patients common included study. Regular activation maps generated regular 4 mm tip catheter. Following this, computed online prior displayed on map shadowed areas PF was <200 Hz (figure, left panel). Focal radiofrequency application (RFa) directed late panel) right (LA-LF). Successful reached if junctional rhythm recorded during RFa no longer inducible afterwards. Results Twenty (48 ±15 years, 75% female) enrolled A area 0.92±0.48 cm2 found 18 them. revealed that there difference between compared adjacent mean at 175.5 ± 37.1 (analysis per patient) 170.1 48.10 recording site) lower differed significantly than atrial (279.71 28.11 patient, 279.91 69.47 (P<0.0001). mapping, successfully applied these low-frequency (LA-LF) induced 17 patients. after all Additional often given reinforce (11 9 RFa, 4.03 3.35 min time). Conclusion could performed located an frequency.