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The heart begins developing before birth, and sometimes a problem occurs while the heart or its blood vessels are forming. These problems are called congenital heart diseases (CHDs). They are present at birth and can affect the structure or function of the heart.

What Is Congenital Heart Disease?

Congenital heart disease refers to a structural problem with the heart that develops before birth.

The heart may have an abnormal opening, a problem with one of its valves, an unusual arrangement of blood vessels, or another structural difference that affects how blood moves through the heart.

Some congenital heart defects are simple and may not require treatment. Others can interfere with the amount of oxygen-rich blood reaching the body and may require procedures or surgery.

What Causes Congenital Heart Disease?

In many cases, the exact cause of a congenital heart defect is not known.

Several factors may play a role, including genetic changes and certain conditions or exposures during pregnancy. Some congenital heart diseases can also occur as part of genetic syndromes.

Having a family history of congenital heart disease may increase the risk in some cases.

It is important to remember that parents are generally not responsible for their child's congenital heart defect. Many defects develop for reasons that cannot be identified or prevented.

What Are Common Types of Congenital Heart Disease?

There are many different types of congenital heart defects.

Atrial Septal Defect

An atrial septal defect is an opening between the heart's upper chambers. A small opening may cause few symptoms, while a larger defect can place additional strain on the heart and lungs.

Ventricular Septal Defect

A ventricular septal defect is an opening between the lower chambers of the heart. Small defects may close on their own, while larger ones can affect blood flow and may require treatment.

Tetralogy of Fallot

Tetralogy of Fallot is a complex congenital heart condition involving several heart abnormalities. It can reduce the amount of oxygen reaching the body and usually requires specialized medical care.

Coarctation of the Aorta

This condition occurs when part of the aorta is narrower than normal. The narrowing can make it harder for blood to flow from the heart to the rest of the body.

Abnormal Heart Valves

Some people are born with heart valves that are shaped differently or do not work normally. These valve problems can affect blood flow through the heart.

What Are the Symptoms in Children?

Symptoms depend on the type and severity of the heart defect. Some babies show signs soon after birth, while others may not have symptoms for years.

Possible symptoms include:

• Rapid breathing

• Difficulty feeding

• Poor weight gain

• Excessive tiredness

• Blue or gray skin, lips, or fingernails

• Sweating during feeding

• Swelling

• Frequent respiratory problems

Doctors may discover a heart defect after hearing an unusual heart sound called a murmur during a routine examination.

Can Congenital Heart Disease Be Diagnosed Before Birth?

Yes. Some congenital heart defects can be detected during pregnancy through prenatal screening and imaging.

A fetal echocardiogram may be recommended when there is a higher risk of a heart problem or when an earlier test suggests that the baby's heart may need closer examination.

However, not every congenital heart defect can be detected before birth.

What Symptoms Can Adults Experience?

People with mild congenital heart disease may reach adulthood without knowing they have a heart defect.

Adults with congenital heart disease may experience:

• Shortness of breath

• Fatigue

• Chest discomfort

• Heart palpitations

• Dizziness

• Fainting

• Reduced ability to exercise

• Swelling in the legs or feet

Some adults may have already received treatment during childhood but continue to need regular heart monitoring.

Why Can Congenital Heart Disease Affect Adults?

Medical advances have helped many children with congenital heart defects live into adulthood. However, having treatment during childhood does not always mean the condition is permanently resolved.

Some adults may develop complications later in life, such as abnormal heart rhythms, valve problems, heart failure, or changes in blood pressure.

This is why adults with congenital heart disease may need continued follow-up with healthcare professionals who understand congenital heart conditions.

How Is Congenital Heart Disease Diagnosed?

Doctors use different tests depending on the suspected heart problem.

These may include:

• Physical examination

• Echocardiogram

• Electrocardiogram

• Chest imaging

• Cardiac MRI

• Cardiac CT

• Heart catheterization

An echocardiogram is commonly used because it can create images of the heart and show how blood moves through its chambers and valves.

How Is Congenital Heart Disease Treated?

Treatment depends on the type and severity of the defect.

Some small defects may only require regular monitoring. Others may need medications to manage symptoms or reduce strain on the heart.

Certain heart defects may require catheter-based procedures or surgery to repair the problem.

Treatment can sometimes be needed shortly after birth, while other defects may not require intervention until later in life.

FAQs

Is congenital heart disease present from birth?

Yes. Congenital heart disease refers to structural or functional heart problems that develop before birth.

Can congenital heart disease be diagnosed in adults?

Yes. Some mild defects are not discovered until adulthood, sometimes during an examination or testing for another health concern.

Can congenital heart disease be treated?

Many congenital heart defects can be managed with monitoring, medications, catheter procedures, or surgery, depending on the condition.

Can children with congenital heart disease exercise?

Many children can participate in physical activities, but recommendations depend on the specific heart defect. Parents should discuss appropriate activity levels with their child's healthcare professional.

Conclusion

Congenital heart diseases are heart problems that develop before birth. They can affect the heart's chambers, valves, blood vessels, or the way blood flows through the heart.

Some defects are mild and may never cause noticeable symptoms, while others can cause serious problems and require treatment. Children may experience symptoms such as breathing difficulties, poor feeding, poor growth, or bluish skin, while adults may notice fatigue, shortness of breath, palpitations, or reduced exercise ability.