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Updated: Jun 27, 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
Successful catheter ablation to accessory atrioventricular pathway as cardiac resynchronization therapy in a patient
Toshihiro Iwasaku1, Keiji Hirooka, Tatsunori Taniguchi
1Cardiovascular Division, Osaka National Hospital, 2-1-14, Hoenzaka, Chuo-ku, 540-0006 Osaka, Japan.
Abstract:
A 55-year-old man was admitted to our hospital for further examination of the abnormalities of chest X-ray and electrocardiogram. He was diagnosed with type B Wolff-Parkinson-White syndrome concomitant with dilated cardiomyopathy. Despite the medical therapy using enalapril and carvedilol for 20 months, his cardiac performance and brain natriuretic peptide (BNP) were not so improved. Because asynchronous septal motion caused by pre-excitation through a right-sided accessory pathway (AP) might deteriorate his cardiac performance, catheter ablation to the AP was performed. Successful procedure after 17 months improved left ventricular (LV) contraction, reduced LV volume, and decreased mitral regurgitation and BNP.
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