A defect of the heart that is present at birth.
A heart condition existing at birth.
An abnormality or malformation of the heart or the blood vessels connected to the heart that is present at birth. The causes of congenital heart disease are unknown. Current research tentatively suggests that contributing factors may include genetic abnormalities (such as Down syndrome), certain medications taken during pregnancy, alcohol or drug abuse during pregnancy, and viral infections of the mother, particularly German measles (rubella).
The term “congenital heart defect” is employed to refer to any irregularity in the heart that is present at birth. Such defects can impact various components of the heart, encompassing the chambers, valves, or the primary blood vessels.
Mistakes during embryonic development often result in defects and typically occur early in the embryo’s life. The most frequently recognized cause is Rubella, also known as German measles, in the mother. However, the specific reasons behind these defects remain unknown in the majority of instances.
Genetic influences don’t appear to be highly significant. Even if a couple has a child with a heart defect, the probability of their second child also being affected is not substantially increased. Similarly, individuals born with heart anomalies do not have a significantly elevated risk of having a child with similar conditions.
The symptoms of congenital heart disease are primarily due to either inadequate or excessive blood flow to the lungs or body. Abnormalities in the heart’s structure can lead to certain complications, like deoxygenated blood being directed to the body instead of the lungs, or oxygen-rich blood being routed back to the lungs rather than the body. Some heart defects can result in cyanosis, which is a bluish tint to the skin, and shortness of breath. However, other heart anomalies might remain unnoticed.
Potential complications arising from an unaddressed heart defect may include inhibited development of limbs and muscles, along with susceptibility to pneumonia following even minor respiratory infections. Sustained cyanosis could lead to clubbing, a condition marked by the thickening and broadening of finger and toe tips. If the heart lacks the capacity to augment blood flow during physical exertion, the child may fatigue quickly during physical activities. In some cases left untreated, a severe complication known as Eisenmenger complex may occur, characterized by heightened resistance to blood flow in the lungs.
Diagnosis of most defects before birth, using advanced ultrasound scanning, is feasible. Post birth, potential defects are explored using methods such as chest X-rays, ECG (electrocardiogram), or echocardiography.
Oxygen therapy and various medications can help alleviate the symptoms. Certain conditions, such as minor septal defects or patent ductus arteriosus, may naturally diminish or disappear over time. However, some defects necessitate surgical intervention. Constricted heart valves can frequently be treated using a procedure known as balloon valvuloplasty. In more severe instances, open-heart surgery or even a heart transplant may be required.
After a successful surgery, the child’s health usually improves significantly, characterized by renewed growth, heightened activity levels, and a life expectancy that approaches normal.
Children with heart defects, whether treated or untreated, have an elevated risk of bacterial endocarditis, a serious infection that affects the heart lining and valves. To prevent this condition, these children are administered antibiotics prior to any surgical procedures, including dental treatments.