Why the study?
Antral isolation for a left common pulmonary vein trunk of the superior and inferior pulmonary veins is challenging because of balloon inadaptability to the large common ostium.
The hot balloon can be adjusted to an enlarged size to facilitate occlusion and isolation of the left common pulmonary vein trunk, potentially avoiding pulmonary vein stenosis.
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Should not yet change LCPV ablation practice; leaves open prospective validation of adjustable hot balloon.
Key Teaching Points•Antral isolation for a left common pulmonary vein trunk (LCPV) of the superior and inferior pulmonary veins is challenging because of the balloon inadaptability to the large common ostium.•Hot balloon facilitates the occlusion and isolation of the LCPV antrum by an adjustment of the enlarged balloon size, which might help avoid pulmonary vein stenosis following a distal segmental ablation.•Study of the long-term outcome of a single-shot antral isolation of a common pulmonary vein with hot balloon would be warranted. •Antral isolation for a left common pulmonary vein trunk (LCPV) of the superior and inferior pulmonary veins is challenging because of the balloon inadaptability to the large common ostium.•Hot balloon facilitates the occlusion and isolation of the LCPV antrum by an adjustment of the enlarged balloon size, which might help avoid pulmonary vein stenosis following a distal segmental ablation.•Study of the long-term outcome of a single-shot antral isolation of a common pulmonary vein with hot balloon would be warranted.
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Wakamatsu et al. (2018) studied this question.
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