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Updated: Jul 25, 2026

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
Published on: December 11, 2017
[Fulguration of extrasystolic ventricular focus]
E Velázquez Rodríguez1, F Rosas, R Frank
1Clínica de Arritmias y Marcapasos, Hospital de Cardiología, Centro Médico Nacional Siglo XXI, I.M.S.S. México, D.F.
Abstract:
A case is presented of symptomatic premature ventricular contractions refractory to drug therapy with right bundle branch block QRS morphology and left axis deviation in a 68-year-old female without structural heart disease. Endocardial mapping localized the extrasystolic focus at meso-inferoapical region of the left ventricular septum suggesting an origin from the Purkinje network of the left posterior fascicle. Catheter ablation with direct-current energy abolished extrasystolic complexes, without complications. The patient remained asymptomatic over a follow-up of 3 months.
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