Key result
Radiofrequency catheter ablation of the slow pathway successfully restored left ventricular function and resolved symptoms in a 74-year-old man with tachycardiomyopathy at 11 months follow-up.
Why the study?
Does radiofrequency catheter ablation of the slow pathway improve symptoms and left ventricular function in a patient with tachycardiomyopathy secondary to nonreentrant atrioventricular nodal tachycardia?
Case Report (n=1)
Does radiofrequency catheter ablation of the slow pathway improve symptoms and left ventricular function in a patient with tachycardiomyopathy secondary to nonreentrant atrioventricular nodal tachycardia?
Radiofrequency catheter ablation of the slow pathway is an effective treatment for tachycardiomyopathy secondary to nonreentrant atrioventricular nodal tachycardia, leading to full recovery of left ventricular function.
Answers are grounded in this paper and cite their sources.
May support ablation in rare nonreentrant AVNRT tachycardiomyopathy; hypothesis-generating and requires prospective validation before practice change.
Nonreentrant atrioventricular (AV) nodal tachycardia is a rare form of arrhythmia due to simultaneous anterograde conduction in dual AV pathways, one atrial impulse triggering two ventricular complexes. We report the case of a 74-year-old man referred for incessant palpitations resistant to antiarrhythmic medication, and effort dyspnea. A nonreentrant AV nodal tachycardia is diagnosed with electrophysiological study. A dilated cardiomyopathy with left ventricular dysfunction is found with gated blood pool single-photon emission computed tomography. A radiofrequency catheter ablation of the slow pathway is successfully performed. The patient is reassessed 11 months after ablation. He is asymptomatic and left ventricular function has fully recovered.
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Clémenty et al. (2007) conducted a case report in Tachycardiomyopathy secondary to nonreentrant atrioventricular nodal tachycardia (n=1). Radiofrequency catheter ablation of the slow pathway was evaluated on Symptom resolution and left ventricular function recovery. Radiofrequency catheter ablation of the slow pathway successfully restored left ventricular function and resolved symptoms in a 74-year-old man with tachycardiomyopathy at 11 months follow-up.
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