Our interesting electrocardiogram has two qRS morphology without features of preexcitation suggesting two atrio ventricular node conduction system. All cardiologists should be aware of this feature in heterotaxy syndrome as reentrant supraventricular tachycardia may develop in these patients.
Keywords: heterotaxy syndrome; reentrant supraventricular tachycardia.
© 2021 The Authors. Journal of Arrhythmia published by John Wiley & Sons Australia, Ltd on behalf of Japanese Heart Rhythm Society.