Journal: Frontiers in Cardiovascular Medicine
Article Title: Transcatheter ablation of atrioventricular nodal reentry tachycardia in children and congenital heart disease in the era of 3D mapping
doi: 10.3389/fcvm.2024.1506858
Figure Lengend Snippet: 7 years-old, 24 kg girl suffering from both typical and atypical AVNRT refractory to medical therapy. Electrophysiologically guided low-voltage bridge (LVB) strategy, through 3D mapping of the Koch's triangle and the search for the typical “hump and spike” electrograms. Subsequent “linear lesion” cryoablation. (A) 3D mapping of the Koch's triangle; voltage bar range of 0.1–1 mV. A type 1 LVB is immediately visible. Red dots: His location. (B) Expanding voltage bar range to 0.1–2 mV, an even larger LVB is evident. (C) Voltage bar range to 0.1–3 mV. First and successful cryoablation (green dot) delivered in the exact location where the hump and spike electrograms were detected. (D) Due to the presence of residual nodal echo beats, a liner lesion cryoablation is the delivered in the Koch's triangle to cover the entire LVB.
Article Snippet: All 3D mapping systems (i.e., EnSite mapping systemTM by Abbott Medical, CARTOTM 3 by Biosense Webster Inc, Rhythmia HDxTM by Boston Scientific) can be used ( , , ).
Techniques: