Professional Reference articles are designed for health professionals to use. You may find the Atrial Septal Defect article more useful, or one of our other health articles. Atrial septal defect ASD is a type of heart defect which allows communication between the left and right side of the heart. These interatrial communications can result from defects in the interatrial septum but also from defects in the atrial connections of the systemic or pulmonary veins sinus venosus or coronary sinus defects.
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Comorbidities, Symptoms, and Treatments for Congenital Heart Defects
Atrial Septal Defect (ASD) | American Heart Association
When the ASD or shunt is small, only a little blood flows from one atrium to the other. Many small ASDs may close on their own as the heart grows during childhood. On the other hand, medium and large sized ASDs are less likely to close on their own and can cause complications if not closed. The heart starts out as a single tube in the developing fetus. As this tube loops, the two top tubes lie side-by-side and a wall septum develops. The atrial septum forms between the fourth week and fifth week of gestation.
Atrial Septal Defect
Congenital heart defects CHDs are the most common types of birth defects, and babies born with these conditions are living longer and healthier lives. Find more statistics about CHDs below. Understanding health issues and needs across the lifespan is vital to improving the lives of individuals born with these conditions. Published: September 27,
Atrial septal defects ASDs are a group of rare disorders of the heart that are present at birth congenital and involve a hole in the wall septum that separates the two upper-chambers atria of the heart. Normally the heart has four chambers: two upper chambers known as atria that are separated from each other by a fibrous partition known as the atrial septum and two lower chambers known as ventricles that are separated from each other by the ventricular septum. Valves connect the atria left and right to their respective ventricles.