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Catheter Ablation of Ventricular Tachycardias Due to Forward and Reverse Propagation Across a Reentrant Circuit Inside a Nonischemic Biventricular Aneurysm
Author(s) -
CHINUSHI MASAOMI,
IZUMI DAISUKE,
FURUSHIMA HIROSHI,
AIZAWA YOSHIFUSA
Publication year - 2011
Publication title -
journal of cardiovascular electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.193
H-Index - 138
eISSN - 1540-8167
pISSN - 1045-3873
DOI - 10.1111/j.1540-8167.2010.01888.x
Subject(s) - medicine , cardiology , ventricular tachycardia , catheter ablation , reentry , ablation , tachycardia , radiofrequency catheter ablation , qrs complex , aneurysm , ventricular aneurysm , left ventricular aneurysm , surgery , myocardial infarction
Ablation of Bidirectional VT. A 64‐year‐old recipient of implantable cardioverter defibrillator presenting with a 4.7 × 3.3 cm nonischemic, biventricular aneurysm developed multiple electrical storms due to ventricular tachycardia (VT) with 2 distinct QRS morphologies. Endocardial electroanatomical mapping revealed the presence of a low‐voltage area corresponding to the aneurysm, where multiple delayed potentials were recorded. Activation mapping and entrainment pacing of both VT revealed the, respectively, forward and reverse propagation of the wavefront across a single reentrant circuit inside the ventricular aneurysm. Delivery of 3 applications of radiofrequency energy to a critical segment of the reentrant pathway eliminated both VT and the electrical storms. (J Cardiovasc Electrophysiol, Vol. 22, pp. 467‐467)