Infantile Tachyarrhythmia: Management Strategy and Short-Term Results in a High-Volume Referral Center

Document Type : Original Article


Cardiac Electrophysiology Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, IR Iran.


Background: Arrhythmia is an uncommon but serious cause of the admission of neonates and infants to emergency wards. The rarity of the condition creates challenges in the diagnostic and therapeutic process.
Methods: The study was conducted in Rajaie Cardiovascular Medical and Research Center, Tehran, Iran.  All infants (aged ≤ 12 mon) with tachyarrhythmias admitted within a 2-year period between September 2014 and August 2016 were included. Stepwise drug therapy based on the mechanism of the arrhythmia was selected for the whole study population. In cases refractory to drug therapy, catheter ablation was performed.
Results: Of 55 cases, 47 infants were treated with antiarrhythmic drugs, 3 (with atrial flutter) received cardioversion, and 3 were treated with catheter ablation. In 1 case (atrial tachycardia), the arrhythmia was eliminated after a single dose of adenosine, and in another (atrial tachycardia), the arrhythmia was eliminated spontaneously. No mortality was reported.
Conclusions: Most infantile arrhythmias are controllable with available antiarrhythmic drugs. Catheter ablation is a good choice for refractory cases.(Iranian Heart Journal 2020; 21(3): 137-144)


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