Atrial Septal Defect
Also written as: ASD — Atrial Septal Defect
A congenital heart defect involving an abnormal opening in the wall between the heart's two upper chambers.
Full Definition
Atrial septal defect (ASD) is a congenital heart condition where there is an abnormal communication between the left and right atria, allowing blood to flow between the upper chambers of the heart. ASDs are classified into several types based on location: secundum (most common), primum, sinus venosus, and coronary sinus defects. Many ASDs cause few symptoms in childhood but may lead to complications in adulthood if not repaired. Treatment options include transcatheter device closure or surgical repair, depending on the size, location, and associated symptoms.
Usage
Usage note: Distinguish carefully from ventricular septal defect in clinical documentation. The abbreviation ASD should not be confused with autism spectrum disorder in pediatric contexts.
In Context
- "The patient presented with a large secundum atrial septal defect causing right heart enlargement." — Pediatric cardiology assessment
- "Transcatheter closure of the atrial septal defect was successfully performed using an Amplatzer device." — Interventional procedure report