Introduction
atrial septal defect
MITRAL REGURGITATION (MR)
Transcatheter mitral edge-to-edge repair (M-TEER) of mitral regurgitation (MR) has emerged as an interventional therapeutic approach in selected patients and increased surgical risk [An iatrogenic atrial septal defect (iASD) persists in roughly 24–50% of patients after transseptal access for M-TEER [We therefore investigated echocardiographic features of the iASD in the CT cohort, its natural history and predictors of spontaneous iASD closure between 1 and 6 months post-M-TEER. Additionally, we evaluated the association of outcomes (HF hospitalization) with spontaneous closure when compared to patients with residual iASD.