Transcatheter Closure of Large Atrial Septal Defects in Adults.

Objective: To examine the outcomes of percutaneous closure of large atrial septal defects (ASDs) (≥25 mm).

Background: Data on long-term results after closure of large ASDs are limited.

Methods: We reviewed the records of 275 consecutive patients who underwent transcatheter closure of large (≥25 mm) ASDs from January 1999 until December 2016 in our center.