Segmental Atrial Function Following Percutaneous Closure of Atrial Septum Using Occluder Device

Patients with ASO devices have significant global and segmental dysfunction in the atrial septal segments, as measured by CDTI, strain, and strain rate. The localized regional dysfunction is likely due to the direct mechanical effect associated with ASO device insertion. This may have implications for long-term atrial function and the need for anticoagulation.