Doctors warn babies dying due to lack of test(Congenital Heart Defects)

What it is

Congenital heart disease refers to a range of birth defects affecting the heart's normal function, present from birth. It is one of the most common types of birth defects, affecting almost 1 in 100 babies born in the UK. The causes can vary, including genetic disorders like Down's syndrome, maternal infections during pregnancy, certain medications, smoking, and poorly controlled diabetes. 

Symptoms can include rapid heartbeat, rapid breathing, swelling, fatigue, and cyanosis (a blue tinge to the skin or lips). There are various types of congenital heart defects such as septal defects, coarctation of the aorta, and pulmonary valve stenosis. Treatment depends on the severity of the defect; while mild cases may not need treatment, significant defects often require surgery or interventional procedures to restore normal heart function. 

People with congenital heart disease may need lifelong treatment and specialist care due to potential complications like heart rhythm issues or valve problems over time. If a child has congenital heart disease, information about them is shared with the National Congenital Anomaly and Rare Disease Registration Service to aid research and improve treatment options.

Types

Congenital heart defects are structural problems affecting the heart's normal function, present from birth. There are many types of congenital heart defects, which can be categorized into altered connections in the heart or blood vessels, and heart valve problems

. Some common types of congenital heart defects include:

1. Aortic valve stenosis: This is a narrowing of the aortic valve, which controls the flow of blood out of the main pumping chamber of the heart to the body.
2. Coarctation of the aorta: This is a narrowing of the main artery (the aorta), which affects blood flow where the arteries branch out to carry blood along separate vessels to the upper and lower body.
3. Ebstein's anomaly: This is a rare form of congenital heart disease where the valve on the right side of the heart (the tricuspid valve) doesn't develop properly, causing blood to flow the wrong way within the heart.
4. Patent ductus arteriosus: This is a connection between the lung artery and the body's main artery that is open while a baby is growing in the womb and typically closes a few hours after birth. However, in some babies, it stays open, causing incorrect blood flow between the two arteries.
5. Atrial septal defect: This is a hole between the upper heart chambers (atria), allowing oxygen-rich blood to leak into the oxygen-poor blood chambers in the heart
   
   
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6. Ventricular septal defect: This is a hole in the wall between the right and left lower heart chambers (ventricles), causing extra blood to flow through the hole from the left to the right ventricle.
7. Pulmonary valve stenosis: This is a narrowing of the pulmonary valve, which controls the flow of blood out of the right heart pumping chamber (the right ventricle) to the lungs.
8. Septal defects: These are holes between the heart's chambers, commonly referred to as "holes in the heart".
9. Transposition of the great arteries: This is a rare condition where the pulmonary and aortic valves and the arteries they're connected to are in the wrong position.
10. Underdeveloped heart: This is a condition where part of the heart doesn't develop properly, making it difficult for it to pump enough blood.

Treatment for congenital heart defects depends on the severity of the defect. Mild defects may not require treatment, while significant defects often require surgery or interventional procedures to restore normal heart function. People with congenital heart disease may need lifelong treatment and specialist care due to potential complications like heart rhythm issues or valve problems over time.

Signs and Symptoms

Some common signs and symptoms of congenital heart defects include:

• Rapid heartbeat
• Rapid breathing
• Swelling of the legs, tummy, or around the eyes
• Extreme tiredness and fatigue
• A blue tinge to the skin or lips (cyanosis)
• Tiredness and rapid breathing when a baby is feeding
• Shortness of breath in babies during feeding, making it hard for them to gain weight
• Fainting during exercise
• Swelling in the hands, ankles, or feet

Causes

Congenital heart disease is caused when something disrupts the normal development of the heart, usually during the first 6 weeks of pregnancy. While some factors are known to increase the risk of congenital heart disease, no obvious cause is identified in most cases. Some of the risk factors and genetic conditions associated with congenital heart disease include:

1. Genetic conditions: Certain genetic health conditions that a baby inherits from one or both parents can cause congenital heart disease. Examples include Down's syndrome, Turner syndrome, and Noonan syndrome.
2. Maternal diabetes: Women with diabetes have a higher risk of giving birth to a baby with congenital heart disease, especially if blood sugar is not well-controlled.
3. Alcohol: Drinking alcohol during pregnancy, particularly in large amounts, can increase the risk of congenital heart disease.
4. Rubella (German measles): A rubella infection during the first 8 to 10 weeks of pregnancy can cause multiple birth defects, including congenital heart disease.

Diagnosis And Treatment Methods

Congenital heart defects (CHD) are diagnosed through various techniques, including pulse oximetry, echocardiograms, and physical examinations

. Pulse oximetry measures the amount of oxygen in the blood, while echocardiograms use high-frequency sound waves to create an image of the heart. Physical examinations involve observing the baby, feeling their pulse, and listening to their heart with a stethoscope. In some cases, a fetal echocardiography may be performed during pregnancy to confirm the diagnosis.Treatment for CHD depends on the severity of the defect. Some cases may not require any treatment, while others may need immediate attention after birth. Treatment options include surgical procedures, cardiac catheterizations, and heart transplants. Surgical procedures aim to repair the defect or reduce its effects, while cardiac catheterizations involve inserting a small, flexible tube into a blood vessel to take pressure measurements and assess the heart's function. Heart transplants may be considered in severe cases where the heart cannot be repaired

.It's essential to monitor and manage congenital heart disease throughout a person's life, as complications can develop over time. Regular check-ups with a cardiologist and following heart-healthy recommendations can help prevent complications and maintain a healthy lifestyle.

Recovery process

The recovery process for congenital heart disease treatment varies depending on the specific defect and the type of intervention required. Here is an overview of the recovery process for some common congenital heart defects:

1. Aortic Valve Stenosis: Treatment may involve a procedure called balloon valvuloplasty or open-heart surgery to repair or replace the valve. Recovery time can vary depending on the procedure and the individual's condition.
2. Coarctation of the Aorta: Surgery is usually recommended to restore blood flow through the aorta. Recovery after surgery may involve monitoring blood pressure and potential follow-up procedures if needed.
3. Ebstein's Anomaly: Mild cases may not require treatment, while severe cases may involve surgery to repair or replace the tricuspid valve. Recovery after valve repair surgery can vary based on individual factors.
4. Patent Ductus Arteriosus (PDA): Treatment options include medication, catheter-based procedures, or open-heart surgery to close the duct. Recovery depends on the chosen treatment method and the patient's response.

Servival Rate

The survival rates for congenital heart disease (CHD) can vary depending on the specific defect, the severity of the condition, and the type of treatment received. Here is an overview of survival rates based on the provided sources:

1. Mortality for Critical Congenital Heart Diseases: A study found that the lethality attributed to critical congenital heart diseases was 64.7%, with a proportional mortality of 12.0%. The survival rate at 28 days of life decreased by almost 70% in newborns with congenital heart disease.
2. Survivorship in Children and Young Adults with CHD in Sweden: A study in Sweden showed that survivorship among children younger than 5 years increased from 96% in those born in the 1970s to 98% in those born at the beginning of 1990. However, mortality risk remains high compared to matched controls, especially in subsets of children with complex issues.
3. Survival Rates at UVA Children's Hospital: At UVA Children's Hospital, the survival rates for congenital heart surgeries are notably high. For the most complex congenital heart surgeries (STAT 5), the survival rate is 96.5%, compared to a national average of 86%. The hospital's expected-to-observed ratio for these surgeries is 0.59, indicating fewer deaths than expected based on procedure difficulty.

Some Physical Exercises

Exercise is beneficial for individuals with congenital heart disease (CHD) as it improves health, exercise tolerance, and quality of life

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. Here are some key points regarding physical exercise for CHD patients based on the provided sources:

• Benefits of Exercise: Physical activity is essential for everyone, including patients with CHD. It improves health, exercise tolerance, mental well-being, sleep, stress, and anxiety. Regular exercise can lead to improved stamina, breathing patterns, and a decrease in resting heart rate
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• Exercise Recommendations: Most individuals should aim for 30–45 minutes of moderate-intensity aerobic exercise two to three times a week, along with muscle-strengthening exercises at least twice a week. Activities like walking or cycling are also beneficial. However, patients with specific conditions like an enlarged aorta should avoid strenuous activities that could elevate blood pressure or pose a risk of bleeding.
• Guidance from Healthcare Providers: It is important for CHD patients to consult their cardiologist or clinical nurse specialist before starting an exercise regimen. Healthcare professionals may recommend specific tests like an exercise test or echocardiogram to assess suitability for certain activities based on individual heart conditions.
• Safety and Efficacy: Research indicates that exercise training is generally safe and effective for improving physical fitness in children and adolescents with CHD. While there may be variability in study outcomes, exercise interventions have shown positive changes in fitness measures without adverse events linked to the interventions
  
  
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The Bottom Line

Physical exercise is encouraged for individuals with congenital heart disease as part of a healthy lifestyle. It is essential to follow personalized recommendations from healthcare providers, start slowly, listen to your body, and gradually increase the intensity and duration of physical activity to reap the benefits while ensuring safety and well-being.