Search Nerddpedia

Conditions Encyclopedia Entry 1779362299

** This encyclopedia entry is about **Atrial Septal Defect (ASD)**, a congenital heart defect that affects the atrial septum, the wall of tissue that separates the right and left atria of the heart. **CONTENT:** ### Overview Atrial Septal Defect (ASD) is a congenital heart defect that occurs when there is an abnormal opening in the atrial septum, the wall of tissue that separates the right and left atria of the heart. This opening allows blood to flow between the two atria, which can lead to an increased workload on the heart and potentially cause complications. ASD is a relatively common congenital heart defect, affecting approximately 1 in 2,500 births. ASD can be classified into three main types: **Secundum ASD**, **Sinus Venosus ASD**, and **Primum ASD**. Secundum ASD is the most common type, accounting for approximately 75% of all ASD cases. Sinus Venosus ASD is a less common type that occurs near the superior vena cava, while Primum ASD is a rare type that occurs in the lower part of the atrial septum. 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. ### History/Background The first reported case of ASD dates back to 1672, when the French physician Jean Riolan described a patient with a heart defect that allowed blood to flow between the two atria. However, it wasn't until the 20th century that ASD was recognized as a distinct congenital heart defect. In the 1950s and 1960s, surgeons began to develop techniques for repairing ASD using open-heart surgery. The first successful ASD repair was performed by Dr. Alfred Blalock in 1945. Since then, ASD repair has become a routine procedure, with many patients undergoing surgery as children. ### Key Information Key facts about ASD include: * **Prevalence**: ASD affects approximately 1 in 2,500 births. * **Types**: ASD can be classified into three main types: Secundum, Sinus Venosus, and Primum. * **Symptoms**: Common symptoms include shortness of breath, fatigue, and palpitations. * **Treatment**: ASD can be treated with surgery or catheter-based procedures. * **Complications**: Untreated ASD can lead to complications such as heart failure, arrhythmias, and pulmonary hypertension. ### Significance ASD is a significant congenital heart defect that affects millions of people worldwide. Understanding ASD is crucial for developing effective treatments and improving patient outcomes. Advances in medical technology and surgical techniques have significantly improved the prognosis for patients with ASD, allowing many to lead normal, active lives. **INFOBOX:** - **Name**: Atrial Septal Defect (ASD) - **Type**: Congenital heart defect - **Date**: First reported case in 1672 - **Location**: Affects the atrial septum, the wall of tissue that separates the right and left atria of the heart - **Known For**: ASD is a relatively common congenital heart defect that can be treated with surgery or catheter-based procedures. **TAGS:** Congenital Heart Defect, Atrial Septal Defect, Heart Surgery, Cardiology, Pediatric Cardiology, Cardiovascular Disease, Heart Health, Medical Condition. **Important Note:** If you or a loved one has been diagnosed with ASD, it is essential to seek medical attention from a qualified healthcare professional. With proper treatment and care, many patients with ASD can lead normal, active lives.