Why does a ventricular septal defect cause respiratory infections?

Written by Di Zhi Yong

Cardiology

Updated on September 05, 2024

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Because ventricular septal defect is a type of congenital heart disease, it mainly leads to pulmonary infections in children, often causing respiratory infections. If this condition is not treated in time, it can worsen the symptoms, decrease the child's resistance, and lead to frequent respiratory diseases. Early surgical treatment is recommended to improve the child's symptoms.

It is also important to monitor the child's breathing, heart rate, and pulse changes, and it is advisable to regularly revisit the hospital for an echocardiogram. Early surgical treatment is recommended as it can completely cure the disease.

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Written by Xie Zhi Hong

Cardiology

1min 42sec

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Is perimembranous ventricular septal defect serious?

The ventricles are separated by the interventricular septum, which divides the left and right ventricles. Typically, after blood is ejected from the left ventricle and oxygenated by tissues, it returns to the right ventricle. The blood from the right ventricle gets oxygenated through the pulmonary artery before it can return to the left ventricle. These two should be isolated from each other before passing through the lungs. The interventricular septum consists of the membranous and muscular parts, and a defect in either part can affect oxygenation. Therefore, whether the defect is in the membranous or muscular portion is not an indicator for diagnosing the severity of the interventricular septum defect; rather, the size of the defect should be considered. Generally speaking, a defect of about 10mm in the interventricular septum, especially when accompanied by other conditions such as Tetralogy of Fallot, is considered severe. Moreover, when the defect reaches over 10mm, surgical intervention is required as minimally invasive surgery would not be feasible; these are considered severe interventricular septum defects. Also, there are cases with multiple complex defects or larger defects that should be surgically treated as soon as possible.

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Written by Chen Tian Hua

Cardiology

46sec

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Can a ventricular septal defect heal by itself?

Some ventricular septal defects can heal on their own. For ventricular septal defects smaller than five millimeters, some patients can heal on their own; the defects that generally heal are those in the membranous and muscular parts of the septum, and the younger the age, the greater the likelihood of healing. If the ventricular septal defect still exists after the age of five, it generally cannot heal on its own. For ventricular septal defects that do not heal spontaneously, if they significantly affect hemodynamics, interventional treatment or surgical surgery is needed for repair. If the impact of the ventricular septal defect on hemodynamics is not significant, regular follow-up examinations can be conducted to understand the condition of the disease.

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Written by Di Zhi Yong

Cardiology

46sec

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Can ventricular septal defect avoid amniocentesis?

Because ventricular septal defect is a type of congenital heart disease, it is recommended that patients adopt a light diet and especially avoid spicy and stimulating foods due to the condition of ventricular septal defects. It is still recommended to pursue active and early surgical treatment to improve symptoms. If there is poor cardiac function, or symptoms of palpitations and chest tightness occur, amniocentesis should not be performed as it carries certain risks. However, for milder symptoms that can be timely controlled, amniocentesis and other tests may be considered, but it is also necessary to rule out other diseases. If the patient does not have any special diseases in the past, such as coronary heart disease or diabetes, the procedure can be handled.

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Written by Xie Zhi Hong

Cardiology

1min 17sec

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Is congenital heart disease with perimembranous ventricular septal defect serious?

Simple congenital heart defects, such as perimembranous defects, generally are not particularly severe. However, there are several scenarios to consider: The first scenario involves a large defect that typical occluders cannot address; in such cases, surgical intervention is required. This type of defect is generally considered severe. Another scenario is when a cardiac defect has been present for an extended period, leading to repeated shortness of breath, heart failure, cardiac enlargement, and even pulmonary arterial hypertension. This situation would be considered a severe ventricular septal defect, caused by the failure to treat the membranous part of the septal defect in time. Thus, the majority of ventricular septal defects are not very severe in the early stages. They become serious if the defect is too large or if there is coexistence with other defects, such as an overriding aorta or poorly developed pulmonary artery, among other complex congenital heart diseases. Regardless, patients with perimembranous congenital heart defects should undergo surgical treatment early to avoid missing the opportunity for surgery.

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Written by Zhang Zhi Gong

Cardiothoracic Surgery

1min 25sec

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Ventricular septal defect refers to a defect in the ventricular septum, the wall dividing the left and right ventricles of the heart.

A normal human heart is divided into four chambers: the left ventricle, right ventricle, left atrium, and right atrium. The circulation in a normal person involves venous blood entering the right atrium, passing through the mitral valve into the right ventricle. The right ventricle then contracts and pumps blood into the lungs. After exchanging gases and becoming oxygenated, the blood turns bright red. It then returns to the left atrium. From the left atrium, blood passes through the mitral valve back into the left ventricle, and then the left ventricle contracts and pumps blood throughout the body. Therefore, there is a thick wall between the normal left and right ventricles, known as the ventricular septum. If due to congenital heart disease or other reasons, a small hole appears in the ventricular septum, it is called a ventricular septal defect. If this defect is large, it necessitates active surgical treatment because if the defect exists, the pressure of the blood flow in the left ventricle is higher, causing a large amount of abnormal blood to enter the right ventricle. This leads to a significant accumulation of blood in the right ventricle, causing the patient to have too much blood in the pulmonary circulation, making the patient prone to recurrent colds and infections. Furthermore, these children may easily develop heart failure and even life-threatening conditions such as infective endocarditis.