[Ablation of the bundle of His through a patent foramen ovale, by approach from the left side].

The authors report the case of a 60-year-old male patient in whom resection of the bundle of His via a right-sided approach to treat permanent very rapid atrial fibrillation was attempted, but failed. The bundle of His tissue was resected very easily on the left side due to the presence of a patent foramen ovale, which also avoided the risks of the left catheterism in this patient.