Key result
RSPV pulsed field ablation can induce superior vena cava electrical abnormalities and macroreentrant atrial tachycardia.
Why the study?
Electrical effects on adjacent cardiac structures following right superior pulmonary vein pulsed field ablation are not fully characterized, particularly regarding superior vena cava-dependent atrial tachycardia.
Case Report
Pulsed field ablation of the right superior pulmonary vein can lead to collateral electrical abnormalities in the adjacent superior vena cava, resulting in macroreentrant atrial tachycardia.
Pulsed field ablation (PFA) is increasingly used for pulmonary vein isolation because of its tissue selectivity and favorable safety profile. However, electrical effects on adjacent structures may occur because of the close anatomical relationship between the pulmonary veins and neighboring cardiac structures. In particular, the right superior pulmonary vein (RSPV) is anatomically close to the superior vena cava (SVC), and transient or persistent SVC electrical abnormalities after RSPV PFA have been reported1-3.
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Ohashi et al. (2026) conducted a case report in Superior vena cava-dependent macroreentrant atrial tachycardia. Right superior pulmonary vein pulsed field ablation was evaluated. Right superior pulmonary vein pulsed field ablation can lead to transient or persistent superior vena cava electrical abnormalities, such as macroreentrant atrial tachycardia.
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