A trial septal defect (ASD), the most prevalent congenital heart disease in adults, accounts for 5% to 10% of all congenital heart diseases.1 Although most patients are asymptomatic until adulthood, early diagnosis and treatment are crucial to prevent such possible sequelae as right-sided heart failure, pulmonary hypertension, and arrhythmia. Surgery is the gold standard in the treatment of secundum ASD, because its morbidity and mortality rates are very low, while postoperative functional capacity and survival rates are excellent in the long term. Although surgery is a low-risk and recommended treatment method, its risks include post-pericardiotomy syndrome, arrhythmia, pleural and pericardial effusion, the need for blood products, and scar formation. Percutaneous closure of ASD was first performed in 1976. It has been widely adopted over the subsequent decades because it is a low-risk method, implies a short hospital stay, has no need for blood products, and produces no scars.2 However, it can lead to life-threatening early and late sequelae that require emergency intervention. Early sequelae can include residual shunts, systemic and pulmonary device embolization, thromboembolism, superior vena cava and right-upper pulmonary vein compression, tricuspid or mitral valve compression, and arrhythmia. Late and life-threatening sequelae include free ruptures of the right and left atrial walls that cause cardiac tamponade, erosion of the ascending aorta, and aorta-atrial fistula formation.
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Case ReportIn February 2013, a 22-year-old woman was admitted to our emergency department with sudden-onset dyspnea and subsequent syncope. In the initial examination, she was unconscious and in respiratory arrest. After cardiopulmonary resuscitation, she was intubated. Transthoracic echocardiography (TTE) revealed dense pericardial effusion, fibrin, and cardiac tamponade. The patient, in shock, underwent urgent operation.Intraoperative examination revealed rupture of the left atrial roof and noncoronary aortic sinus, caused by an atrial septal occluder (ASO) (Fig. 1). We placed a temporary pledgeted suture on the ruptured noncoronary sinus of the ascending aorta, to stop the bleeding through a very small perforation. After a standard bicaval cannulation, we initiated cardiopulmonary bypass. The right atrium was opened after aortic cross-clamping and antegrade delivery of blood cardioplegia. The ASO was then removed, and a temporary autologous pericardial patch was constructed for the ostial