Atrial septal defect closure in adults: A ten-year experience

Atrial septal defects (ASD) constitute the most frequent congenital heart disease in adults and ostium secundum (OS) the most common type. Benefit of its closure in adulthood has long been controversial.

To evaluate outcomes of OS-ASD closure in adults.

Retrospective cohort study, over a ten-year period from 2008 to 2018. All adults (≥20 years old) who benefited from OS-ASD closure were included. Study endpoints were closure success rate, functional status evolution and incidence of new arrhythmias at 12 months.

Fifty patients were recruited. Dyspnea (≥ NYHA II) was noted in 58% and arrhythmia in 18% of patients. Feasibility of a percutaneous closure was 50%. Closure success rate was 100%. Surgery was associated with high postoperative morbidity with longer hospitalization stay (20 vs. 4 days, p <0.001). At 12 months, an improvement in functional status was observed in 79%. Incidence of new arrhythmias was 5%. A significant decrease in right cavities dilation as well as pulmonary arterial pressure has been reported.

Immediate results of OS-ASD closure in adults are satisfactory. Percutaneous closure is associated with reduced hospital morbidity. At 12 months, a significant improvement in functional status was observed however the possible occurrence of new arrhythmias imposes a close follow-up.