congenital heart defects
A congenital heart defect is a structural problem (or defect) in the heart that is present at birth. A baby's heart begins to develop shortly after conception. During development, structural defects can occur. These defects can involve the walls of the heart, the valves of the heart, and the arteries and veins near the heart. Congenital heart defects can disrupt the normal flow of blood through the heart. The blood flow can:
Types of congenital heart defects
There are many types of congenital heart defects. They include:
Some of these problems are described below.
Abnormal passages in the heart or between blood vessels
Problems with the heart valves
Congenital heart defects can involve any of the valves and include the following types of problems:
Examples of particular heart valve problems include:
Problems with placement or development of blood vessels near the heart
- Pulmonary valve stenosis is the narrowing of the pulmonary valve. The narrowing slows the flow of blood from the right ventricle to the lungs.
- VSD is a hole in the wall that separates the left and right ventricles.
- Overriding aorta is a defect in which the aorta is positioned between the left and right ventricles, over the VSD.
- Right ventricular hypertrophy is the thickening of the right ventricle. The thickening is caused by the heart having to work harder because of the other defects.
Problems with development of the heart
Today, the outlook for an infant born with a heart defect is much better than it was 30 years ago. Rapid advances in infant and childhood surgery, better tests, and new medicines help most children with congenital heart defects. Many children born with more complex or severe heart defects now reach adulthood. Today, there are more than 1 million adults living with congenital heart defects.
What causes congenital heart defects?
Doctors do not know what causes most cases of congenital heart defects. Heredity may play a role. In rare cases, more than one child in a family is born with a heart defect. Also, parents who have a congenital heart defect may be more likely than other parents to have a child with the condition.
Babies who have certain other birth defects, such as Down's syndrome, are also more likely to have congenital heart defects.
Other factors that raise the risk for congenital heart defects are:
Research continues to find the causes of congenital heart defects.
Signs and symptoms of congenital heart defects
The most common signs and symptoms of congenital heart defects are:
The signs and symptoms that a child has depend on:
Some infants and children have no signs or symptoms. Others have severe or life-threatening symptoms.
Many types of congenital heart defects cause the heart to work harder than it should. This stresses the heart and can lead to heart failure, causing the heart muscle to weaken and the heart to enlarge.
Doctors usually diagnose congenital heart defects during pregnancy or within the first few months after birth. Some children with less severe defects are not diagnosed until they are older and more demands are put on their hearts. Others are not diagnosed until they are adults.
If your child's doctor suspects a congenital heart defect, he or she will refer your child to a specialist who treats heart problems in children. The specialist, a pediatric cardiologist, will take a family and medical history, do a physical exam, and order several tests.
During the physical exam, the doctor:
An echocardiogram, which is harmless and painless, uses sound waves to create a moving picture of your child's heart. During an echocardiogram, reflected sound waves outline the heart's structure completely. The test allows the doctor to clearly see any problem with the way the heart is formed or the way it's working. An echocardiogram is the most important test available to your child's cardiologist to both diagnose a heart problem and follow the problem over time. In children with congenital heart defects, an echocardiogram will outline each problem with the heart's structure and show how the heart is reacting to these problems. The echocardiogram will help your child's cardiologist to know if and when treatment is needed.
During pregnancy, if your doctor suspects that your baby has a congenital heart defect, a special test called a fetal echocardiogram can be done. This test uses sound waves to create a picture of the baby's heart while the baby is still in the womb. The test is usually done during the fifth month of pregnancy. If your child is diagnosed with a congenital heart defect before birth, your doctor can plan treatment before the baby is born.
Other tests used to help diagnose congenital heart defects include:
Doctors treat congenital heart defects with:
The treatment your child receives depends on the type and severity of the defect. Other factors include your child's age, size, and general health. Treatment can be simple or very complex. Many children are treated with medicines and are monitored by their doctor. Other children may need surgery.
Your child may take one or more of the following medicines to help the heart work better and lessen symptoms: Digoxin is thought to improve heart function and can keep the heartbeat regular. Diuretics treat the buildup of fluid in the heart and body. ACE inhibitors decrease the work the heart has to do and may help remodel the heart and blood vessels to work more efficiently. Beta blockers slow the heart rate and lower blood pressure to decrease the workload on the heart. Inotropes strengthen the heart's pumping ability. Prostaglandin E1 is used to keep the ductus arteriosus open in some defects until corrective surgery can be carried out. This improves blood flow and oxygen levels until the defect is corrected. The ductus arteriosus normally closes within a few days after birth.
Special procedures using catheters
Doctors can correct some congenital heart defects during cardiac catheterization. These are called catheter-based procedures or interventions. They can be used instead of open-heart surgery, which is a major operation. A catheter is inserted through a blood vessel in your child's groin. It is then threaded to the heart, where some holes in the interior walls of the heart can be fixed, a patent ductus arteriosus can be closed, and narrow valves and blood vessels can be opened up. Cardiac catheterization:
Your child may need open-heart surgery if the defect can't be repaired using a catheter-based procedure. Some surgeries repair the defect completely. Other surgeries improve the child's health but do not completely repair the defect. Open-heart surgery may be done to:
Sometimes, open-heart surgery can improve a child's health but not repair the problem. Examples include:
Babies born with multiple defects that are too complex to repair may need a heart transplant. In this procedure, the child's heart is replaced with a healthy heart that has been donated.
How can congenital heart defects be prevented?
There is no known way to prevent congenital heart defects, but there are things you can do to lower the chance that your baby will have a congenital heart defect. However, even after you lower the risks, your baby may still develop a congenital heart defect.
If you are planning to become pregnant or are pregnant, talk to your doctor about any medicines that you are taking, including:
Your doctor will recommend that you take folate before you become pregnant. This is recommended mainly to prevent abnormalities in the baby's nervous system, and there is some evidence that it may also help prevent certain types of congenital heart defects.
You should avoid:
If you or anyone in your family has congenital heart disease, genetic testing may be available. This may show a genetic cause for congenital heart disease. Testing cannot prevent congenital heart disease, but may be able to make you aware of the risks.
Living with a congenital heart defect
With new advances in testing and treatment, most children with congenital heart defects grow into adulthood and live productive lives. Some continue to need specialized care for survival and to maintain a good quality of life. Some may need multiple procedures, including cardiac catheterizations and surgeries. Others may need pacemakers to help their hearts beat properly.
Mothers of children born with a heart defect often think that they did something wrong during pregnancy to cause the problem. The cause of most cases of congenital heart defects is unknown. It is important that mothers know that they did not cause their child's illness.
Most children with congenital heart defects grow up to a healthy adulthood. Only children with complex heart defects may continue to need special medical attention into adulthood.
Treatment and care for your child may be costly. The cost of surgery and hospital stays is very high. Your health insurance may not pay for everything. Some parents may need help in paying medical bills. You can get information from your doctor and hospital about how to apply for financial aid.
It is important to keep your health insurance current. If you change jobs, make sure that the new health insurance will cover your child who has a congenital heart defect. Some health insurance plans may not cover some medical conditions that you or your covered family member had before joining the new plan.
It is also very important for your child to have health insurance as adulthood approaches. Review your current health insurance plan. Find out how coverage can be extended to your child beyond the age of 18. Some policies may allow you to keep your child on your plan if he or she remains in school or is disabled.
Caring for a child with a serious heart problem can be demanding. If both parents work, one of them may have to quit and stay home with the child if suitable day care can't be found. The drain on energy, emotions, and finances can be very stressful. Ask your child's doctor about support groups and other types of support in your area. Seek counseling if the stress is overwhelming.
It is important for your child to have ongoing regular medical care. This includes:
You may consider having your child wear a medical alert bracelet or necklace. This tells anyone caring for your child that your child has a congenital heart defect.
Adults, teenagers, and children should have routine dental care to prevent infections of the mouth. Most people with congenital heart defects need to take antibiotics before a dental procedure, treatment, or cleaning. Talk to your doctor before going to the dentist.
Children with congenital heart defects
Some children with congenital heart defects do not grow and develop as fast as other children who are the same age. Your child may be smaller and thinner than other children. Your child may also start activities such as rolling over, sitting, and walking later than other children. After treatments and surgery, growth and development often improve.
Your child may need extra calories to grow. If your child's heart has to pump faster because of the defect, the body needs more energy to keep up the extra work. This may cause your child to tire quickly. Some babies are not able to eat enough because they tire while feeding. Older children also may tire before finishing a meal.
Exercise for children
Exercise helps children strengthen their muscles and stay healthy. Your child may tire easily, so he or she should rest or take frequent breaks during activities, if necessary. Some children with congenital heart defects may need to limit the amount or type of exercise they do. Talk to your doctor about what is safe exercise for your child.
Remember to ask your doctor for a note for school and other organizations describing any limits on your child's exercise or physical activities.
Emotional issues for children
Children with a serious heart problem may have a hard time coping or may feel isolated if they have to be in the hospital frequently. Some children feel sad or frustrated with their body image and their inability to be a "normal" kid. Sometimes brothers or sisters are jealous of all the attention received by the child with a congenital heart defect.
Parents may feel stress over financial and insurance issues. Your child may feel that he or she is the cause of this stress. Help your child by talking to him or her, and allow your child to be involved in everyday activities. If you have concerns about your child's emotional health, talk to your child's doctor.
Teenagers with congenital heart defects
The teenage years are difficult for most children. It is a time of risk taking, and denial is often used as a way of coping. There is pressure to be like other teenagers. Some teenagers with congenital heart defects still need specialized care and must take medicine on a regular basis. Help your teenager cope with the stresses of growing up with a serious health problem. Remind your teenager that, with proper care, he or she can grow up healthy and participate in most, if not all, activities.
Let your teenager help make decisions about medical care. This fosters independence and encourages regular follow-up with the doctor.
Many teenagers with congenital heart defects can participate in organized sports. Restrictions of activity vary depending on the teenager, the type of sport, and the type of heart defect. Some children may need to limit the amount of activity, and others may need to avoid contact sports. Your doctor can help you and your teenager decide which activities are right for him or her.
Overall, parents should be aware that the majority of children born with congenital heart defects live normal, healthy lives and should be encouraged to do so.
Adults with congenital heart defects
Today, most babies born with heart defects will live to be adults. Many of these adults believe that the surgery they had in childhood was a "cure" and may not realize that regular medical follow-up is needed to survive and maintain good health.
When thinking about changing jobs, adults with congenital heart defects should carefully consider the impact on their health insurance coverage. Some health plans have waiting periods or clauses to exclude some kinds of coverage. Before making any job changes, find out if the change will affect your health insurance coverage.
There are laws that protect people with congenital heart defects who are having trouble getting a job. The Americans with Disabilities Act and Work Incentives Improvement Act try to ensure equal hiring for all people, including those with health conditions.
Pregnancy and congenital heart defects
Women with congenital heart defects who want to become pregnant (or who are pregnant) should: