Persistent iatrogenic atrial septal defect after single-puncture, double transseptal access for 4D ICE-guided left atrial appendage occlusion: Incidence and clinical outcomes.
BACKGROUND Persistent iatrogenic atrial septal defect (iASD) is a known consequence of transseptal puncture (TSP). Large-bore double transseptal access through a single TSP is commonly used for intracardiac echocardiography (ICE)-guided left atrial appendage occlusion (LAAO). This study evaluated the incidence and clin...