Conditions Encyclopedia Entry 1776914164
Health & Medicine

Conditions Encyclopedia Entry 1776914164

Dr. Vita Health
Health & Medicine Editor
0 views 2 min read Apr 23, 2026

Overview

Atrial septal defect (ASD) is a common congenital heart defect that affects approximately 1 in 1,500 births worldwide. It is a type of structural heart defect that occurs when there is an abnormal opening in the wall (septum) between the heart's two upper chambers (atria). This opening allows blood to flow between the left and right atria, which can lead to various complications, including heart failure, arrhythmias, and pulmonary hypertension. ASDs can be classified into three main types: ostium secundum, ostium primum, and sinus venosus.

Symptoms of ASD may not be apparent at birth, but they can develop over time. Common symptoms include shortness of breath, fatigue, and palpitations. In some cases, ASD may not cause any noticeable symptoms until adulthood. Diagnosis is typically made using echocardiography, a non-invasive imaging test that uses sound waves to create images of the heart.

History/Background

The first reported case of ASD was documented by the French physician William Hunter in 1750. However, it was not until the early 20th century that ASD was recognized as a distinct congenital heart defect. In the 1950s and 1960s, surgeons began to develop techniques for surgically repairing ASDs, which significantly improved patient outcomes.

Key Information

Key facts about ASD include:

* ASD is a congenital heart defect that affects approximately 1 in 1,500 births worldwide.
* ASDs can be classified into three main types: ostium secundum, ostium primum, and sinus venosus.
* Symptoms may not be apparent at birth but can develop over time.
* Diagnosis is typically made using echocardiography.
* Surgical repair is the primary treatment for ASD.

Surgical repair of ASD involves closing the abnormal opening between the atria using a patch or other material. This procedure can be performed using open-heart surgery or minimally invasive techniques. In some cases, ASD may be treated using catheter-based interventions, such as transcatheter closure.

Significance

ASD is a significant congenital heart defect that affects millions of people worldwide. Early diagnosis and treatment are critical to preventing complications and improving patient outcomes. Advances in surgical techniques and technology have significantly improved the treatment of ASD, allowing patients to lead active and healthy lives.