Verapamil prevented haemodynamic collapse enabling successful catheter ablation of atrioventricular nodal reentrant tachycardia in a 6-year-old with criss-cross heart post-Fontan surgery.
Verapamil may be useful to prevent haemodynamic collapse during tachycardia mapping for catheter ablation in complex congenital heart disease patients.
Abstract A 6-year-old male with a concordant criss-cross heart after Fontan surgery was referred for fast-slow atrioventricular nodal reentrant tachycardia. Verapamil was useful in preventing haemodynamic collapse in this case, requiring mapping during tachycardia.
Taniguchi et al. (2026) studied this question. Verapamil prevented haemodynamic collapse enabling successful catheter ablation of atrioventricular nodal reentrant tachycardia in a 6-year-old with criss-cross heart post-Fontan surgery.