Congenital heart disease, or a congenital heart defect, is a heart abnormality present at birth. The problem can affect:
There are numerous types of congenital heart defects. They can range from simple conditions that don't cause symptoms to complex problems that cause severe, life-threatening symptoms.
Treatments and follow-up care for defects have improved drastically over the past few decades, so nearly all children with heart defects survive into adulthood. Some need continuous care for their heart defect throughout their lives. However, many go on to have active and productive lives despite their condition.
Though there are many different types of congenital heart defects, they can be divided into three main categories:
Many doctors classify congenital heart disease as either cyanotic congenital heart disease or acyanotic congenital heart disease. In both types, the heart isn't pumping blood as efficiently as it should. The main difference is that cyanotic congenital heart disease causes low levels of oxygen in the blood, and acyanotic congenital heart disease doesn't. Babies with reduced oxygen levels may experience breathlessness and a bluish tint to their skin. Babies who have enough oxygen in their blood don't display these symptoms, but they may still develop complications later in life, such as high blood pressure.
A congenital heart defect is often detected during a pregnancy ultrasound. If your doctor hears an abnormal heartbeat, for instance, they may further investigate the issue by performing certain tests. These may include an echocardiogram, a chest X-ray, or an MRI scan. If a diagnosis is made, your doctor will make sure the appropriate specialists are available during delivery.
In some cases, the symptoms of a congenital heart defect may not appear until shortly after birth. Newborns with heart defects may experience:
In other cases, the symptoms of a congenital heart defect may not appear until many years after birth. Once symptoms do develop, they may include:
Congenital heart disease occurs as a result of an early developmental problem in the heart's structure. The defect typically interferes with the normal flow of blood through the heart, which may affect breathing. Although researchers aren't exactly sure why the heart fails to develop correctly, suspected causes include the following:
The treatment for a congenital heart defect depends on the type and severity of the defect. Some babies have mild heart defects that heal on their own with time. Others may have severe defects that require extensive treatment. In these cases, treatment may include the following:
There are various medications that can help the heart work more efficiently. Some can also be used to prevent blood clots from forming or to control an irregular heartbeat.
Some of the complications associated with congenital heart defects can be prevented with the use of certain devices, including pacemakers and implantable cardioverter defibrillators (ICDs). A pacemaker can help regulate an abnormal heart rate, and an ICD may correct life-threatening irregular heartbeats.
Catheterization techniques allow doctors to repair certain congenital heart defects without surgically opening the chest and heart. During these procedures, the doctor will insert a thin tube into a vein in the leg and guide it up to the heart. Once the catheter is in the correct position, the doctor will use small tools threaded through the catheter to correct the defect.
This type of surgery may be needed if catheter procedures aren't enough to repair a congenital heart defect. A surgeon may perform open-heart surgery to close holes in the heart, repair heart valves, or widen blood vessels.
In the rare cases in which a congenital heart defect is too complex to fix, a heart transplant may be needed. During this procedure, the child's heart is replaced with a healthy heart from a donor.
Depending on the defect, diagnosis and treatment may begin shortly after birth, during childhood, or in adulthood. Some defects don't cause any symptoms until the child becomes an adult, so diagnosis and treatment may be delayed. In these cases, the symptoms of a newly discovered congenital heart defect may include:
The treatment for congenital heart disease in adults can also vary depending on the severity of the heart defect. Some people may only need to monitor their condition closely, and others may require medications and surgeries.
In some cases, defects that may have been treated in childhood can present problems again in adulthood. The original repair may no longer be effective or the initial defect may have become worse over time. Scar tissue that developed around the original repair may also end up causing problems, such as heart arrhythmias.
Regardless of your situation, it's important to continue seeing your doctor for follow-up care. Treatment may not cure your condition, but it can help you maintain an active, productive life. It will also reduce your risk for serious complications, such as heart infections, heart failure, and stroke.
Women who are pregnant or plan on becoming pregnant can take certain precautions to lower their risk of giving birth to a baby with a congenital heart defect: