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Updated: Sep 23, 2026

Assessing Intracardiac Vortices with High Frame-Rate Echocardiography-Derived Blood Speckle Imaging in Newborns
Published on: December 22, 2023
[Ectopic junctional tachycardia of the neonate]
N Derval1, J B Thambo, M Jimenez
1Service de cardiologie pédiatrique, hôpital cardiologique du Haut-Lévêque, avenue de Magellan 33604 Pessac.
Abstract:
Congenital ectopic junctional tachycardia (EJT) is a rare arrhythmia presenting in the first 6 months of life. It is often resistant to antiarrhythmic drugs and its poor prognosis (35% mortality) explains its often complex management. The authors report two cases which illustrate its unpredictability with a potential to degenerate to serious ventricular arrhythmias. The possibility of progression to atrioventricular block, increased by antiarrhythmic therapy, may lead to implantation of a cardiac pacemaker. The poor outcome of the two babies underlines the severity of these arrhythmias.
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