PO-05-231 CHARACTERIZATION OF PERINODAL WAVEFRONT COLLISION FROM VARIOUS IMPULSE ORIGINS AS AN ABLATION TARGET FOR ATRIOVENTRICULAR NODAL TACHYCARDIA
نویسندگان
چکیده
Historically, slow pathway (SP) ablations were considered an anatomically focused procedure. Presently, novel mapping techniques have been used to identify targets for Atrioventricular Nodal Tachycardia (AVNRT). There various anatomical descriptors along the perinodal region. Described in literature, preferential myocardial bundles are arranged from sinoatrial node (SAN) with inputs into atrioventricular (AVN). Two of these bundles, right inferior extension and penetrating bundle, colloquially named fast pathway, respectively. These AVN can be further characterized beyond known landmarks through high density activation (HDAM). The site atrial convergence sinus rhythm (SR) has previously validated localize SP. Evaluate specificity wavefront collision AVNRT ablation targets, examining converging wavefronts SR, junctional (JR), coronary (CS) pacing, AVNRT. Utilizing HD Grid™ diagnostic catheter EnSite™ Precision (Abbott), four maps constructed analyze latest proximity Koch’s triangle. Individual data was collected JR, CS pacing. Signal collection restricted nearfield electrograms utilizing absolute dvdt annotation detection algorithm. window interest dependent upon underlying rhythm. SR pacing adhered a strict window. JR required open ventricular signals reliance algorithm annotation. Wavefront propagation observed using animations, extinguished merging identified as collision. (figure 1A), distance successful lesions measured. Successful defined development during non-inducibility tachycardia. (2mm radius) follows: 1mm, 2mm, 0mm, combined mean 1mm. Identification target AVNRT, independent origin.
منابع مشابه
Left Septal Slow Pathway Ablation for Atrioventricular Nodal Reentrant Tachycardia.
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ژورنال
عنوان ژورنال: Heart Rhythm
سال: 2023
ISSN: ['1556-3871', '1547-5271']
DOI: https://doi.org/10.1016/j.hrthm.2023.03.1421