Key result
Catheter ablation using high-resolution electroanatomic mapping successfully treated multiple atrial tachycardias with three different mechanisms in a patient after orthotopic heart transplantation.
Case Report (n=1)
High-resolution electroanatomic mapping is crucial for characterizing and successfully ablating complex, multiple atrial tachycardias following orthotopic heart transplantation.
Case report highlights ablation challenges in post-transplant AT; leaves open optimal mapping strategies for multiple mechanisms.
Key Teaching Points•Catheter ablation treatment of post–heart transplantation atrial tachycardia (AT) can be challenging. The approach demands precise electroanatomic mapping and careful evaluation of the arrhythmia mechanism in the context of complex scar substrates that predispose to multiple ATs.•Multiple ATs in different cardiac atria with 3 different mechanisms could be observed in the same patient after orthotopic cardiac transplantation.•High-resolution/-density electroanatomic mapping using a multipolar catheter with small and closely spaced electrodes may better characterize the mechanisms of these challenging tachycardias and lead to successful ablation outcome. •Catheter ablation treatment of post–heart transplantation atrial tachycardia (AT) can be challenging. The approach demands precise electroanatomic mapping and careful evaluation of the arrhythmia mechanism in the context of complex scar substrates that predispose to multiple ATs.•Multiple ATs in different cardiac atria with 3 different mechanisms could be observed in the same patient after orthotopic cardiac transplantation.•High-resolution/-density electroanatomic mapping using a multipolar catheter with small and closely spaced electrodes may better characterize the mechanisms of these challenging tachycardias and lead to successful ablation outcome.
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Shi et al. (2018) conducted a case report in Post-heart transplantation atrial tachycardia (n=1). Catheter ablation with high-resolution electroanatomic mapping was evaluated. Catheter ablation using high-resolution electroanatomic mapping successfully treated multiple atrial tachycardias with three different mechanisms in a patient after orthotopic heart transplantation.
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