Key result
Radiofrequency catheter ablation successfully resolved left ventricular dyssynchrony and improved cardiac function in a patient with accessory pathway-induced cardiomyopathy.
Case Report (n=1)
No
Catheter ablation of an accessory pathway can resolve dyssynchrony and improve cardiac function in patients with accessory pathway-induced cardiomyopathy, serving as an effective alternative to cardiac resynchronization therapy.
A 50-year-old man presented with exertional dyspnea and orthopnea. An electrocardiogram showed a delta wave and a wide QRS complex, similar to left bundle branch block. Cardiac echocardiography revealed diffuse severe hypokinesis and dyssynchrony. The patient was diagnosed with congestive heart failure. We considered that the patient's condition was caused by an accessory pathway-induced cardiomyopathy after heart failure compensation with guideline-oriented medical therapy. We therefore performed catheter ablation for right-sided pre-excitation syndrome as cardiac resynchronization therapy. The left ventricular dyssynchrony was resolved immediately after the procedure, and the patient's ventricular contraction improved, with a reduced cardiac volume at 6 months after the procedure-thus suggesting that the accessory pathway had affected the patient's cardiac function.
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Nakabayashi et al. (2017) conducted a case report in Accessory pathway-induced cardiomyopathy (n=1). Radiofrequency catheter ablation was evaluated on Cardiac function and left ventricular dyssynchrony. Radiofrequency catheter ablation successfully resolved left ventricular dyssynchrony and improved cardiac function in a patient with accessory pathway-induced cardiomyopathy.
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