What does atrial septal defect mean?

Written by Li Hai Wen

Cardiology

Updated on September 12, 2024

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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.

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Written by Li Hai Wen

Cardiology

39sec

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Postoperative precautions for atrial septal defect surgery

Ventricular septal defect surgery is often divided into surgical operations and interventional treatments by the Department of Internal Medicine. For interventional treatments, it is important to rest in bed for 24 hours afterwards. Also, the site of the puncture needs to be immobilized for at least eight hours, so it is important to regularly check the heart with an echocardiogram after the surgery. After surgical operations, it is important to maintain a balanced diet with easily digestible foods. Within a month after surgery, try to avoid strenuous activities, and regularly check the heart with an echocardiogram under the guidance of a doctor.

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Written by Tang Li

Cardiology

1min 26sec

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How does septal defect shunt?

Atrial septal defect is the most common congenital heart disease in adults, accounting for 20%-30% of all adult congenital heart conditions. The impact of an atrial septal defect on hemodynamics primarily depends on the amount of shunting. Due to higher pressure in the left atrium compared to the right atrium, a left-to-right shunt is formed. The amount of shunting depends on the size of the defect, as well as the compliance of the left and right ventricles and the relative resistance in the systemic and pulmonary circulations. Diseases that affect the compliance of the left ventricle, such as hypertension and coronary artery disease, can increase the extent of the left-to-right shunt. A continuous increase in pulmonary blood flow leads to pulmonary congestion, increasing the load on the right heart. Pulmonary vascular compliance decreases, progressing from functional pulmonary arterial hypertension to organic pulmonary arterial hypertension. As right heart system pressure continuously increases and eventually exceeds the pressure in the left heart system, the original left-to-right shunt reverses to become a right-to-left shunt, resulting in cyanosis.

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Written by Di Zhi Yong

Cardiology

59sec

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Can babies with ventricular septal defect sleep on their stomachs?

If the child has an atrial septal defect, it is not recommended for them to sleep on their stomach because this position can increase the burden on the heart, leading to an overload of the heart. This is a type of congenital heart disease. Currently, surgical treatment is primarily recommended, as early surgical intervention can alleviate the symptoms in children. Patients with ventricular septal defects typically display signs of ischemia and hypoxia, which can affect a child’s growth and development. It is advised to periodically re-examine the heart through echocardiography. If the defect is relatively large, early surgical treatment is recommended. It is also important to actively prevent upper respiratory infections, which can be beneficial for the child. In terms of sleeping posture, it is not recommended to sleep on the stomach; the best position is lying on the left side, as this can help alleviate the burden on the child’s heart.

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Written by Xie Zhi Hong

Cardiology

1min

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Is a ventricular septal defect with pulmonary hypertension mild or severe?

The most common complication of atrial septal defect is pulmonary hypertension, which can be classified as mild, moderate, or severe. Generally, mild pulmonary hypertension is not a major issue and is not considered very serious. However, moderate to severe pulmonary hypertension often accompanies repeated coughing, shortness of breath after exercise, or difficulty breathing. This situation is relatively serious and it is advisable to undergo surgery as soon as possible. If the condition reaches a severe stage, pulmonary hypertension could continuously increase. Furthermore, in patients with severe pulmonary hypertension, closing the atrial septum can lead to severe breathing difficulties and increased shortness of breath. Therefore, it is crucial to closely monitor patients with pulmonary hypertension.

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Written by Tang Li

Cardiology

1min 8sec

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Is atrial septal defect common?

Atrial septal defect accounts for about 20%-30% of all congenital heart diseases and is more common in females. Many cases are mild in children and are not discovered until adulthood. Atrial septal defects can be classified based on anatomical abnormalities into patent foramen ovale, primary atrial septal defect, and secondary atrial septal defect. A patent foramen ovale generally does not cause shunting between the two atria. A primary atrial septal defect is located at the lower part of the atrial septum, is semicircular in shape, and is often larger, frequently associated with malformation of the mitral or tricuspid valves resulting in regurgitation. A secondary atrial septal defect is situated in the middle of the atrial septum at the fossa ovalis or near the superior and inferior vena cava. The symptoms of an atrial septal defect vary with the size of the defect; minor cases may be asymptomatic, while severe cases can result in heart failure.