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Atrial septal defect
Imaging manifestations of atrial septal defect
The imaging characteristics of ventricular septal defects are as follows: 1. Small defects: Normal cardiac silhouette, or left ventricular hypertrophy, with mild pulmonary congestion. 2. Medium defects: Left ventricular hypertrophy or biventricular hypertrophy, enlarged pulmonary artery segment, smaller aortic knob. 3. Large defects: Both ventricles enlarged, left atrium enlarged, prominent pulmonary artery segment, significant pulmonary congestion. When pulmonary hypertension with right-to-left shunting occurs, the pulmonary artery segment is markedly prominent, but the lung fields are clear, and the heart shadow is smaller than before.
Do infant atrial septal defects heal by themselves?
Atrial septal defect is a common congenital heart disease, accounting for about 1/1500 of newborns, and is most commonly found in infants and children. The impact of atrial septal defects on hemodynamics mainly depends on the amount of shunting. Some studies confirm that atrial septal defects smaller than six millimeters can close on their own without external intervention. Therefore, when an atrial septal defect is discovered, it is necessary to regularly recheck the cardiac echocardiography to determine the size of the defect. If the atrial septal defect decreases in size as the patient ages, there is a possibility of self-healing. If the area of the patient's atrial septal defect does not change or gradually increases, regular echocardiography rechecks are needed, and cardiac catheterization may be performed if necessary.
The difference between ventricular septal defect and atrial septal defect
The difference between a ventricular septal defect and an atrial septal defect mainly lies in their locations. A normal heart is divided into four chambers, which are the left ventricle, right ventricle, left atrium, and right atrium. Each chamber is separated by a septum, much like walls between rooms in a house. Due to certain reasons, such as congenital heart defects, there may be openings or defects in these walls, known as septal defects. An atrial septal defect refers to a defect between the right atrium and the left atrium, whereas a ventricular septal defect pertains to a defect between the left and right ventricles. The murmur of atrial septal defects is relatively softer, as the pressure difference between the atria is smaller, and the defect is located higher up. In contrast, the murmur of ventricular septal defects is louder due to the greater pressure difference between the ventricles and is located lower down, approximately between the third and fourth ribs. The murmur of atrial septal defects is found between the second and third ribs. Moreover, since the pressure difference in ventricular septal defects is greater, the impact on the heart is relatively more significant.
Can medication be taken for atrial septal defect?
Patients with small atrial septal defects and no related symptoms, pulmonary hypertension, or ventricular enlargement generally do not need specific medication. If symptoms do occur, interventional or surgical treatment should be chosen. Medication is necessary only if there is accompanying heart failure, pulmonary infection, or arrhythmias such as atrial fibrillation. In the case of infections like pneumonia or infective endocarditis, appropriate antibiotics or antiviral medications should be actively used. When heart failure occurs, medications to control arrhythmias, such as vasodilators, diuretics, and agents to control ventricular rate, are required.
Can someone with an atrial septal defect get pregnant?
Whether patients with atrial septal defects can become pregnant depends on the following factors: 1. Whether the patient normally has symptoms. 2. Whether the echocardiography indicates heart enlargement or pulmonary hypertension. 3. The size of the atrial septal defect. 4. Whether there is a combination of arrhythmias such as atrial flutter or atrial fibrillation, and complications such as pulmonary hypertension or heart failure. For those without symptoms, and where the defect does not cause pulmonary hypertension or right heart enlargement, choosing to become pregnant is possible. Complications are not common in pregnant women with isolated atrial septal defects without pulmonary hypertension. Studies have shown that the incidence of complications in pregnant women, whether the defect is repaired or not, is relatively low. If the patient has related arrhythmias and complications, it should be closely monitored, because the cardiovascular system of the mother undergoes changes during pregnancy, leading to increased cardiac workload and a higher burden on the heart, which in turn can increase the incidence of arrhythmias. For women who are already at high risk of atrial flutter or fibrillation, this risk can increase further. Additionally, pregnant women are in an older physiological state, making it easier to form blood clots, and for those with atrial septal defects, the risk of paradoxical thrombosis increases.
What does atrial septal defect mean?
Atrial septal defect is a relatively common type of congenital heart disease encountered clinically. In simple terms, the human heart has four chambers: the left atrium, right atrium, left ventricle, and right ventricle. Between the left and right atria, there is a structure called the atrial septum, which separates the two atria. If there is a hole in this septum, this condition is referred to as an atrial septal defect. Atrial septal defects are common congenital heart conditions, and when the defect is severe, it often accompanies heart failure and other complications. Under such circumstances, it is crucial to visit a cardiologist for a formal assessment to determine the necessity and approach to treatment.
How severe is an atrial septal defect considered to be?
Atrial septal defect (ASD) is a relatively common congenital heart disease in clinical practice. From a medical perspective, the severity of ASD depends on whether the patient is an adult or a child. For adults with ASD, generally speaking, defects larger than 20 millimeters are considered large atrial septal defects, which are more severe. If the defect size is between 10 and 20 millimeters, it is often classified as a moderate atrial septal defect. Defects smaller than 4 millimeters are considered small atrial septal defects. Generally, small and moderate atrial septal defects are not severe. For children, an atrial septal defect larger than 10 millimeters is considered a large atrial septal defect, which is more severe. Sizes between 5 and 10 millimeters are classified as moderate atrial septal defects. Defects smaller than 5 millimeters are considered small atrial septal defects, which generally are not severe.
Can atrial septal defect be cured?
Atrial septal defect is a common congenital heart disease. When the defect is small, some patients may heal naturally. In recent years, with the development of interventional technology for congenital heart diseases, most patients with atrial septal defects can be completely cured through interventional treatment, and some through surgical treatment. However, some patients have a large atrial septal defect with significant left-to-right shunting, leading to severe pulmonary arterial hypertension and right heart failure, which generally results in a poor prognosis. Some patients also have complications such as atrial flutter and atrial fibrillation. Certain patients may experience right heart failure due to excessive load on the right ventricle, and these patients often have a poor prognosis.
Atrial septal defect should be consulted with the Department of Cardiology.
Atrial septal defect is a common congenital heart disease in childhood, and it is also the most common congenital heart disease in adulthood. The incidence rate of atrial septal defects is about 1/1500 live births, accounting for 5%-10% of all congenital heart diseases, and it is more common in females. Most children with atrial septal defect, in addition to being prone to respiratory infections such as colds, may have no obvious symptoms and their activities are not limited. It is generally not until adolescence that symptoms like shortness of breath, palpitations, and fatigue appear. Patients with atrial septal defects should seek treatment in departments such as cardiology, cardiovascular surgery, thoracic surgery, or pediatric cardiology.
Causes of infant room septal defect
Atrial septal defect is a relatively common congenital heart disease in infants and young children. The causes of atrial septal defects are not very clear, but modern medicine considers that it may be related to the mother having a cold during pregnancy or taking certain medications, or to certain physical and chemical factors during pregnancy. Generally, atrial septal defects are not inherited and are not largely related to genetics.