1 ︱ INTRODUCTION
With the improvement of echocardiography, cardiac catheterization, and
device materials, transcatheter closure of atrial septal defect (ASD)
has gradually replaced traditional thoracotomy surgery as the optimal
treatment for patients with indications. However, long-term
complications of catheter-based closure, especially device-related
malposition, embolization, and thrombus formation, seriously threaten
the life and health of patients 1. Bi-atrial thrombus
formation-induced cerebral infarction and pulmonary embolism are rare
but life-threatening late complications. Left atrial thrombus dislodges
to the arteries of the brain, mesentery, and extremities, which can
cause stroke, intestinal necrosis, and extremity ischemia; meanwhile,
right atrial thrombus dislodges to the pulmonary artery and causes
pulmonary embolism. Both conditions are common causes of acute cardiac
arrest and sudden death.