Why the study?
Does predilatation with a CS catheter and CB sheath dilatator facilitate transseptal access during cryoballoon PVI in patients with excessive interatrial resistance?
Does predilatation with a CS catheter and CB sheath dilatator facilitate transseptal access during cryoballoon PVI in patients with excessive interatrial resistance?
Predilatation of the interatrial septum using a coronary sinus catheter and sheath dilatator is a safe and feasible maneuver to overcome excessive septal resistance during cryoballoon pulmonary vein isolation.
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May facilitate transseptal access after failed attempts; leaves open safety and efficacy in larger prospective series.
Blockhaus et al. (2018) studied this question.
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