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Tachyarrhythmia-induced cardiomyopathy in a neonate
Neha Dalal1, Anita Singh2, Abhijeet Roy3
1Neonatology, Post Graduate Institute of Child Health, Noida, Uttar Pradesh, India.
BMJ Case Reports
|December 31, 2025
Summary
Tachycardia-induced cardiomyopathy (TIC) is a reversible heart dysfunction caused by prolonged fast heart rates. Prompt treatment of the arrhythmia can restore normal cardiac function, even in neonates.
Area of Science:
- Cardiology
- Pediatric Cardiology
- Electrophysiology
Background:
- Tachycardia-induced cardiomyopathy (TIC) results from prolonged fast heart rates, causing ventricular dysfunction.
- While the exact heart rate threshold is unclear, rates >180 bpm warrant attention in neonates and infants.
- TIC is a recognized cause of left ventricular dysfunction, often linked to atrial or ventricular tachyarrhythmias.
Purpose of the Study:
- To present a case of a neonate with tachyarrhythmia and heart failure.
- To highlight the diagnosis and management of tachycardia-induced cardiomyopathy in a term neonate.
- To demonstrate the reversibility of TIC with appropriate medical and procedural interventions.
Main Methods:
- Case report of a term neonate with presentation of tachyarrhythmia and heart failure.
- Management included synchronized cardioversion, non-invasive respiratory support, and infusions of adenosine and esmolol.
- Long-term management with oral furosemide and enalapril.
Main Results:
- The neonate presented with significant tachyarrhythmia and heart failure.
- Successful cardioversion and medical management led to stabilization.
- Post-discharge, the infant showed improved cardiac function and normalized cardiac chamber size.
Conclusions:
- Tachycardia-induced cardiomyopathy should be considered in neonates with unexplained heart failure and tachyarrhythmia.
- Early recognition and intervention are crucial for managing TIC.
- This case illustrates the potential for complete recovery from TIC with timely treatment.
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