Tachycardia-induced cardiomyopathy: Recovery of systolic ejection fraction after sinus rhythm restoration

This case report presents a 63-year-old patient who presented with symptoms of palpitations, skipped heartbeats, fatigue, and shortness of breath. The patient had been experiencing these symptoms for a year, with recent exacerbation. After the diagnostic workup, a diagnosis of tachycardia-induced cardiomyopathy (TIC) was established, where atrial fibrillation (AF) was the arrhythmia that induced the cardiomyopathy. Initial attempts to convert the patient's rhythm to sinus using Amiodarone were unsuccessful. Therefore, electrical cardioversion was performed, resulting in the successful restoration of sinus rhythm. The patient's ejection fraction (EF) was closely monitored post-cardioversion, and a remarkable improvement in systolic function was observed. The stability of sinus rhythm was maintained during the follow-up period, highlighting the importance of terminating the tachycardia that led to cardiomyopathy in the restoration of EF. This case report underscores the critical role of interventions aimed at managing and resolving tachycardia-induced cardiomyopathy, emphasizing the significance of restoring normal cardiac rhythm to achieve improved systolic ejection fraction. Early recognition and appropriate management of tachycardia-induced cardiomyopathy are essential in preventing long-term cardiac dysfunction and enhancing overall patient outcomes.