ArticleThe Journal of international medical research2026
Case analysis of tachycardia-induced cardiomyopathy secondary to persistent tachycardia in children.
Article in The Journal of international medical research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Tachycardia-induced cardiomyopathy secondary to persistent tachycardia in children is a distinct form of cardiomyopathy caused by sustained or frequent tachyarrhythmias. It is characterized by cardiac enlargement, impaired cardiac function, and heart failure and is clinically reversible with early and standardized treatment. Herein, we report a challenging pediatric case presenting with recurrent intermittent dyspnea and palpitations for 1 year. The final diagnoses were as follows: (a) paroxysmal atrial tachycardia and (b) tachycardia-induced cardiomyopathy. Under the guidance of a three-dimensional electroanatomical mapping system, an intracardiac electrophysiological study accurately localized the focal atrial tachycardia to the posterior margin of the right upper pulmonary vein, followed by successful radiofrequency ablation. The patient's clinical symptoms improved significantly postoperatively, and the patient was discharged uneventfully. During the 8-month follow-up period, no recurrence of atrial tachycardia was documented. Follow-up echocardiography confirmed normalization of cardiac dimensions and function.
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