multi spline catheters  (Biosense Webster)

Journal: Journal of Cardiology Cases

Article Title: Successful mapping and ablation of a pediatric-onset non-reentrant fascicular tachycardia

doi: 10.1016/j.jccase.2023.12.002

Figure Lengend Snippet: (A) Right anterior oblique (RAO) and superior (SUP) view of a ventricular muscle activation map during the non-reentrant fascicular tachycardia (NRFT), showing centrifugal activation from the earliest site at the ventricular septum (highlighted in red). The yellow circles indicate the sites where Purkinje potentials (PPs) were recorded during sinus rhythm (SR) along the left anterior and posterior fascicles. The blue circles indicate the sites where preceding PPs were recorded during the NRFT. The larger blue circle indicates the site of the earliest PP recorded with the multi-spline duodecapolar catheter. The location of the breakout site to the ventricular muscle is the apex side of the earliest PP site. We delivered radiofrequency (RF) current to the sites with large blue circle. (B) Intracardiac electrogram during the NRFT mapping. The earliest PP, preceding the QRS onset by 34 ms, is recorded by the electrodes 15–16 (blue asterisk) of the multi-spline duodecapolar catheter. (C) X-ray showing the irrigated-tip ablation catheter (arrow) at the site of the earliest presystolic Purkinje potential via a retrograde aortic approach. (D) The intracardiac electrograms at the site of RF application recorded in the ablation catheter. HBE, His bundle electrogram; CS, coronary sinus; LAO, left anterior oblique; PEN, PENTARAY catheter.

Article Snippet: We inserted a multi-spline duodecapolar catheter (PENTARAY, Biosense-Webster) via a retrograde aortic to map Purkinje potentials systematically along the fascicles, and tagged the sites with blue circles.

Techniques: Activation Assay