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Updated: May 1, 2026

Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure
Published on: February 8, 2022
Atrial septal defects
Tal Geva1, Jose D Martins2, Rachel M Wald3
1Department of Cardiology, Boston Children's Hospital, and Department of Pediatrics, Harvard Medical School, Boston, MA, USA.
Insights
Atrial septal defects, a common congenital heart issue, often cause no symptoms in children but can lead to serious complications in adults. Early closure, surgical or transcatheter, ensures a normal life expectancy.
Area of Science:
- Cardiology
- Congenital Heart Disease
Background:
- Atrial septal defects (ASDs) are the third most prevalent congenital heart malformation.
- These defects involve abnormal openings between the atria, causing blood shunting between systemic and pulmonary circulations.
Purpose of the Study:
- To review the causes, anatomy, pathophysiology, treatment, and outcomes of atrial septal defects.
- To highlight the importance of timely intervention for improved life expectancy.
Main Methods:
- Review of existing literature on atrial septal defects.
- Analysis of treatment outcomes for both surgical and transcatheter closure methods.
Main Results:
- Most children with isolated ASDs are asymptomatic, but risks of exercise intolerance, arrhythmias, and pulmonary hypertension increase with age.
- Untreated defects, especially in females and older adults, elevate the risk of potentially lethal pulmonary vascular disease.
- Surgical closure before age 25 is linked to normal life expectancy; transcatheter closure is a less invasive option for select patients.
Conclusions:
- Early diagnosis and treatment of atrial septal defects are crucial for preventing long-term complications and ensuring normal life expectancy.
- Both surgical and transcatheter closure methods are effective, with transcatheter closure offering a minimally invasive alternative.
Abstract:
Atrial septal defects are the third most common type of congenital heart disease. Included in this group of malformations are several types of atrial communications that allow shunting of blood between the systemic and the pulmonary circulations. Most children with isolated atrial septal defects are free of symptoms, but the rates of exercise intolerance, atrial tachyarrhythmias, right ventricular dysfunction, and pulmonary hypertension increase with advancing age and life expectancy is reduced in adults with untreated defects. The risk of development of pulmonary vascular disease, a potentially lethal complication, is higher in female patients and in older adults with untreated defects. Surgical closure is safe and effective and when done before age 25 years is associated with normal life expectancy. Transcatheter closure offers a less invasive alternative for patients with a secundum defect who fulfil anatomical and size criteria. In this Seminar we review the causes, anatomy, pathophysiology, treatment, and outcomes of atrial septal defects in children and adult patients in whom this defect is the primary cardiac anomaly.
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