On this page, you will find everything you need to know about congenital heart defects.
What are Congenital Heart Defects?
Congenital heart defects are among the most common types of congenital anomalies. They are present at birth and affect the shape and function of the heart. However, children can live healthy lives despite these defects by adhering to a treatment plan. The severity of congenital heart defects varies based on their types.
Types of congenital heart defects include:
- Simple Defects (Non-cyanotic):
Some simple defects may improve on their own without surgical intervention and may sometimes present without symptoms in the affected child. However, they require monitoring by a treating physician, such as:
- Ventricular Septal Defect:
A hole between the lower chambers of the heart (right and left ventricles) where blood can flow from the left ventricle and mix with blood in the right ventricle, potentially causing stress to both heart and lungs.
- Atrial Septal Defect:
A hole in the wall between the upper chambers of the heart (right and left atria), where blood from the left atrium may mix with the right atrium, and the hole may close on its own as the child grows.
- Patent Ductus Arteriosus:
Occurs when there is a connection between the aorta and the pulmonary artery at birth, where blood may flow irregularly, and in many cases, small openings may close on their own.
- Pulmonary Valve Stenosis:
A type of heart valve disease in which the pulmonary valve is very narrow or stiff, affecting the movement and flow of blood from the heart to the pulmonary artery, which connects the heart and the lungs.
- Complex and Critical Defects (Cyanotic):
These defects can cause serious and obvious symptoms requiring urgent medical intervention, such as:
- Tetralogy of Fallot:
A combination of four heart defects occurring together, including pulmonary valve stenosis, a large ventricular septal defect, an overriding aorta (aorta is in an abnormal position), and right ventricular hypertrophy.
Other examples include:
- d-Transposition of the Great Arteries
- Ebstein’s Anomaly
- Tricuspid Atresia
- Truncus Arteriosus
What are the Symptoms of Congenital Heart Defects?
Signs and symptoms mainly depend on the type of congenital defect and age, with some symptoms varying between newborns and adults. However, some congenital defects may not exhibit signs or symptoms.
In general, symptoms include:
- Bluish lips or nails
- Difficulty or rapid breathing
- Shortness of breath during physical activity
- Abnormal heart sounds (heart murmurs)
- Poor circulation
- Fatigue during feeding or cyanosis during feeding
- Persistent fatigue
- Excessive sleep beyond the norm
What are the Causes of Congenital Heart Defects?
These defects occur due to abnormal heart development in the womb during pregnancy. The main cause is often unclear or unknown, but certain risk factors that may increase the chances are identified.
Risk factors include:
- Genetics and genetic changes
- Smoking during pregnancy (evidence attached)
- Taking certain medications during pregnancy, especially in the first trimester (evidence attached)
- Mother’s health and any possible diseases such as diabetes, obesity, or rubella
How are Congenital Heart Defects Diagnosed?
The doctor takes the medical history, performs a clinical examination, and may request additional procedures as needed, such as:
- Measuring blood oxygen levels in newborns using a pulse oximeter
- Fetal echocardiogram during pregnancy for children or adults
- Genetic testing
How are Congenital Heart Defects Treated?
Treatment methods depend on the type and severity of the defect. Some simple defects may improve over time and may not require specific treatment, unlike complex and serious types, which demand medical intervention. Treatment involves several procedures as needed, which may include:
- Medications (evidence attached)
- Cardiac catheterization to treat some simple congenital defects if they do not improve on their own, or to widen narrowed valves or blood vessels
- Ventricular assist device, a mechanical pump supporting heart function and blood flow
- Palliative or temporary surgery to improve blood oxygen levels before heart surgeries
- Surgical intervention, including open-heart surgeries, in certain cases
- Heart transplantation in advanced complex cases, if other treatment options fail
What are the Methods of Preventing Congenital Heart Defects?
Preventive measures include:
It is possible to take certain steps to reduce the risk of birth defects in a baby during pregnancy by:
- Quitting smoking (evidence attached)
- Avoiding passive smoking (being around smokers)
- Controlling chronic diseases (such as diabetes) during pregnancy that may increase the risk of congenital defects
- Avoiding certain medications during pregnancy, hence the importance of discussing prescriptions with the treating physician during pregnancy (evidence attached)
- If a child, one or both parents suffer from congenital heart defects, genetic sequencing may be performed to check for hereditary diseases before planning to conceive, and discussions with genetic specialists are recommended
What are the Complications of Congenital Heart Defects?
Complications depend on the type and severity of the congenital defect. Some complications include:
- Heart failure (cardiac failure)
- Developmental delay issues
- Arrhythmias
- Pulmonary hypertension
- Infections such as pneumonia and endocarditis (inflammation of the heart chambers and valves)
When Should You See a Doctor?
You should visit a doctor upon noticing symptoms, especially cyanosis in infants without a reason, and if there are feeding and growth problems, immediate medical consultation is necessary.
Frequently Asked Questions
I noticed my child stops breathing and turns blue or gray during tantrums and crying fits. Does this mean they have congenital heart defects?
No, this condition is called “breath-holding spells” and usually occurs in children aged six months to six years. If the child experiences a spell, follow these steps:
- Stay calm, as the spell usually lasts less than a minute
- Place the child on their side without trying to carry them
- Stay with the child until the spell passes
- Ensure the child does not hurt their head or limbs during the spell
- Calm the child after the spell and let them rest
My child has congenital heart defects. Do they need surgical intervention to treat them?
Not all congenital heart defects require surgical intervention. Some can improve on their own during sleep, while others improve with medications. Consult your treating physician to determine the appropriate treatments.
When does a doctor decide that surgical intervention is the best solution for congenital heart defects?
It depends on the type of congenital defect and results from various examinations. Some defects require direct surgical intervention, while others are monitored periodically without any surgical intervention.
How to live with congenital heart defects?
- Follow up with the treating physician and adhere to appointments
- Stick to the treatment plan to avoid complications
- Take prescribed medications from your treating physician
- Use devices prescribed by your physician
- Avoid smoking
- Maintain a healthy diet that supports heart health to reduce the risk of chronic diseases (evidence attached)
- Exercise as instructed by your physician regarding the duration and type of suitable exercise for your health condition (evidence attached)
- Maintain an ideal weight
- Attend to your mental health and manage stress
- Receive all vaccinations
- Learn how to handle emergencies if a patient resides at home (by learning CPR)
