Cardiac Function in a Patient of Dilated Cardiomyopathy Is Recovered after Epicardial Accessory Pathway Ablation

概要

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A 44-year-old man was reffered to our hospital for ablation of accessory pathway. He was diagnosed as WPWe syndrome when he was 18 years old. His electrocardiogram showed negative delta wave in lead II, positive delta wave in lead aVR, and R/S ratio was smaller than 1. This indicated epicardial accessory pathway. He was diagnosed dilated cardiomyopathy 3 years ago because of normal coronary and decreased LV systolic function. He had no frequent tachyarrhythmia, hence tachycardia induced cardiomyopathy was not the reason for his LV dysfunction. Before catheter ablation his LV ejection fraction was 33%. After 8 month from catheter ablation his ejection fraction was increased to 50%. Some of the WPW syndrome patients have LV dyssynchrony because of accessory pathway early conduction. Dyssynchrony of WPW syndrome could become the cause of LV dysfunction. Here we reported a case of tremendously recovered LV function after ablation of epicardial pathway.