Symptoms of Atrial Septal Defect in Adults
Apr 20, 2022
Source: Cainiu Health
Dr. Li Man
Introduction
Symptoms of Atrial Septal Defect (ASD) in Adults:
The clinical manifestations of ASD depend on the size of the defect, underlying comorbidities, and the presence or absence of complications. In the early stage, patients may experience palpitations, chest tightness, dyspnea, fatigue, and cyanosis during physical exertion, often accompanied by bilateral lower-limb edema. After age 40, symptoms typically worsen and may include generalized weakness, atrial fibrillation, atrial flutter, and congestive heart failure.
An atrial septal defect (ASD) refers to an abnormality in the development, absorption, or fusion of the interatrial septum during embryogenesis, resulting in a persistent opening between the left and right atria. It is one of the most common congenital heart diseases in adults. So, what symptoms do adults with ASD exhibit? Let’s explore this together.
Symptoms of Atrial Septal Defect in Adults
ASD is a relatively common congenital heart disease. Symptoms vary among adult patients depending on the size of the defect, underlying comorbidities, and whether complications have developed. In early adulthood, individuals with ASD may experience palpitations, chest tightness, shortness of breath, fatigue, and cyanosis during physical activity. Physical examination typically reveals accentuation of the second heart sound (S₂) over the pulmonary valve area, accompanied by a prominent systolic ejection murmur. Bilateral lower-limb edema may also be present.
After age 40, symptoms tend to worsen. Patients may develop generalized weakness and various atrial arrhythmias—including atrial fibrillation and atrial flutter. Severely affected individuals may progress to congestive heart failure, particularly right-sided heart failure, which is a leading cause of mortality in ASD patients. Abdominal distension may also occur.
Once early symptoms appear, surgical repair should be performed promptly to correct the structural cardiac abnormality and improve long-term prognosis. Symptomatic pharmacologic therapy—under physician guidance—can help alleviate associated symptoms and signs. Patients with ASD should aim to reduce cardiac workload: prevent upper respiratory infections, limit dietary sodium intake, and maintain a light, low-salt diet to slow disease progression.
The above outlines the clinical manifestations of atrial septal defect in adults. We hope this information is helpful to you.
