Introduction to Congenital Heart Disease
Old airport road, Bengaluru Feb 9, 2017
What is Conginetal Heart Disease?
Congenital Heart Disease (CHD) is a structural abnormality of the heart, present at birth. The defect is present mostly in the blood vessels near the heart, thereby causing obstruction in the blood flow. Congenital Heart disease is of two types: Cyanotic (the skin becomes blue, due to the lack of oxygen) and Non Cyanotic. The exact cause for CHD is unidentifiable in most cases. Infection from Rubella virus along with retinoic acids and chemicals during pregnancy may be a factor for CHD.
According to a study published in the India Academy of Pediatrics, CHD is a condition seen in every 3.9 births per 1000 births in India. The defects are generally caught immediately after birth, however in some cases it may be discovered later.
Risk factors and symptoms
Many things like Down’s syndrome, a mother suffering from conditions like diabetes, rubella, or using anti-seizure medication or anti acne medication along with genetic predisposition can cause CHD in a baby. Other factors like smoking and consuming alcohol while pregnant can also cause CHD in a baby.
The symptoms include:
- Arecyanosis (blue or purple appearance of the skin – especially the lips, ears and mouth)
- Increased respiratory rate or facing difficulty while breathing
- Excessive sweating during feeding
- Not being able to suckle
- Not accepting feed
Diagnosis for CHD is based on the type and severity of the condition. Given below are few basic tests carried out to diagnose CHD.
- Echocardiography (echo) is a painless test that uses sound waves to create a moving picture of the heart. During the test, the sound waves (called ultrasound) bounce off the structures of the heart. A computer converts the sound waves into pictures on a screen.
- ECG (Electrocardiogram) is a simple, painless test that records the heart’s electrical activity. The test shows how fast the heart is beating and its rhythm (steady or irregular). An ECG also records the strength and timing of electrical signals as they pass through the heart.
- Pulse Oximetry: For this test, a small sensor is attached to a finger or toe (like an adhesive bandage). The sensor gives an estimate of how much oxygen is in the blood.
- Chest X-Ray: It is a painless test that creates pictures of the structures in the chest, such as the heart and lungs. This test can show whether the heart is enlarged. It also can show whether the lungs have extra blood flow or extra fluid, a sign of heart failure.
Given below are a few preventive measures a pregnant woman can take to avoid CHD in a baby. Women undergoing pregnancy should avoid smoking, consuming alcohol and getting infections.
Treatment options for CHD vary depending on the severity of the condition. Mentioned below are the treatment options for CHD in children.
- Cardiac Catheterization: A repair without surgical opening in the chest wall and heart
- Open-heart surgery: There are two surgical procedures; one is a minimally invasive surgery which repairs the openings in the heart chambers through the ribs; whereas the chest is opened in an open-heart surgery. Both are major procedures and require a significant recovery time for a child.
- Heart transplant: Heart transplant is generally a last resort, only used when the above mentioned procedures are unsuccessful.
CHD in adults
CHD in adults is a rare occurrence and often requires surgery to improve heart functioning. Signs and symptoms of CHD in adulthood can include:
- Short breaths
- Quick tiredness
- Edema of body tissues
In any cases a follow up for both adults and children is compulsory after being treated for CHD.
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