When your child is referred for a heart assessment, it is completely understandable to feel concerned. You may wonder whether the referral means something serious has been found or what will happen when you meet the specialist. A paediatric cardiologist is a doctor who specialises in diagnosing and managing heart conditions in babies, children and young people, helping families understand their child’s heart health, test results and possible care options.
A paediatric cardiologist understands how a child’s heart develops and functions, as well as how heart conditions can affect feeding, growth, development, exercise and everyday activities. Your child may be referred because a doctor has detected a heart murmur, or because they have symptoms such as palpitations, fainting, breathlessness or reduced exercise tolerance. Some children are also referred for monitoring when a heart condition has been identified during pregnancy or shortly after birth.
Being referred to a paediatric cardiologist does not automatically mean your child has a serious heart problem. The specialist’s role is to review your child’s medical history, assess their symptoms, arrange appropriate tests and explain the findings clearly. After assessment, your child may need treatment, regular monitoring or reassurance that no further specialist care is required.
Why Children Need a Heart Specialist
A child’s heart and circulation change as they grow, so normal heart rates, blood pressure and examination findings vary with age. A paediatric cardiologist understands these age-related differences and can recognise what is normal at each stage of development.
Some heart conditions are unique to childhood or are more commonly diagnosed in babies and children. A paediatric cardiologist understands how these conditions affect growth, development and everyday health, helping ensure your child receives age-appropriate care.
Heart symptoms can also look different depending on a child’s age. For example, a baby may become sweaty or tired during feeds, while an older child may experience palpitations or breathlessness during exercise. A paediatric cardiologist considers your child’s age, symptoms and overall development when planning assessment and treatment.
Myth vs Fact
| Myth | Fact |
| A cardiology referral means that my child has a serious heart condition. | Many children are referred to investigate a murmur or symptom and are later reassured that no significant heart problem has been found. |
| Every heart murmur means that there is a hole or another structural problem in the heart. | Many childhood murmurs are innocent sounds caused by normal blood flow. The specialist will assess whether further testing is needed. |
| Chest pain in a child usually comes from the heart. | Most chest pain in otherwise healthy children has a non-cardiac cause. However, chest pain during exercise, or pain accompanied by fainting, palpitations, abnormal examination findings or a concerning family history, requires prompt medical assessment. |
| Every child who sees a paediatric cardiologist needs an echocardiogram. | Tests are selected according to the child’s symptoms, examination findings, medical history and the reason for referral. |
| A child with a heart condition will always need surgery. | Some conditions need monitoring only, while others may be managed with medicines, catheter-based treatment or surgery. |
| Every paediatric cardiologist performs heart surgery. | Paediatric cardiologists diagnose and manage heart conditions. Operations are performed by paediatric cardiac surgeons working with the cardiology team. |
Paediatric Cardiology Can Begin Before Birth
A paediatric cardiologist may become involved before your baby is born if an antenatal scan suggests a possible heart difference. During this stage, you may be offered a detailed fetal echocardiogram, which allows the specialist to examine your baby’s heart structure, rhythm and blood flow. This early assessment can help you understand what has been identified and what it may mean for your baby’s care.
The paediatric cardiologist can explain the findings to you, discuss whether further scans are needed and help you understand what may happen after delivery. You may also receive advice about where your baby should be born and whether your baby is likely to need specialist care immediately after birth. Having this information before delivery can help you and your family feel more prepared.
Congenital Heart Conditions Are a Major Part of the Role
Congenital heart disease includes conditions affecting the structure or function of the heart that develop before birth and are present at birth. These conditions may involve the heart chambers, valves, major blood vessels or the way blood flows through the heart and lungs. When you are given this diagnosis, a paediatric cardiologist helps you understand what the condition means for your child’s health and development.
There are many different types of congenital heart conditions, including atrial septal defects, ventricular septal defects, valve narrowing, coarctation of the aorta, tetralogy of Fallot and transposition of the great arteries. Some conditions may be mild and only require monitoring, while others may need treatment soon after birth.
They Also Treat Acquired Heart Conditions
Not every childhood heart problem is present from birth. Some heart conditions can develop later because of an infection, inflammation, another medical condition or changes affecting your child’s heart muscle. If your child develops symptoms such as chest discomfort, unusual tiredness, breathlessness or changes in exercise ability, a paediatric cardiologist can assess whether the heart may be involved.
A paediatric cardiologist may evaluate acquired conditions such as myocarditis, endocarditis and heart complications associated with Kawasaki disease. Cardiomyopathy may also require assessment, although it can be inherited, genetic or acquired rather than belonging to one category alone. The specialist will consider your child’s symptoms, test results and overall health when deciding what care is needed.
Inherited Heart Conditions Require Specialist Assessment
Some heart conditions can run in families, which means your child may have an increased chance of having or developing a particular heart problem. These conditions can include certain cardiomyopathies, electrical rhythm disorders, aortic conditions and genetic syndromes that affect the heart or major blood vessels. If there is a family history of an inherited heart condition, your child’s doctor may recommend assessment even if you have not noticed any symptoms.
A child may be referred for screening when a close relative has been diagnosed with an inherited cardiovascular condition. The aim is to check whether your child shows any signs of the same condition and decide whether your child needs future monitoring or follow-up. Early assessment can help you understand your child’s risk and allow the specialist team to provide advice based on your child’s individual situation.
Common Reasons for Referral: Heart Murmurs and Chest Pain
A heart murmur is an extra sound that a clinician may hear while listening to your child’s heart. Many murmurs in healthy children are innocent and caused by normal blood flow rather than a heart problem. However, some murmurs may be linked to structural heart conditions, so a paediatric cardiologist assesses the murmur alongside your child’s age, symptoms, growth and examination findings before deciding whether further tests are needed.
Chest pain can also lead to referral, although most episodes in children are not caused by heart disease. Common causes include muscle strain, respiratory infections, digestive conditions or anxiety. However, prompt medical assessment is required when chest pain occurs during exercise or with fainting or palpitations, or when there are abnormal examination findings or a significant family history. Referral to paediatric cardiology may be warranted.
Following assessment, many children are reassured that no serious heart condition is present, while others may require investigations such as an ECG or echocardiogram. Care is always based on your child’s symptoms and examination rather than a single sign alone.
Heart Rhythm Problems and Other Heart-Related Symptoms
Your child’s heart has an electrical system that controls how quickly and regularly it beats. When this system does not work normally, it can cause an arrhythmia, leading to palpitations, a racing heartbeat, fluttering sensations, dizziness or fainting. Although heart rate naturally increases during exercise, excitement, fever or stress, repeated symptoms should be assessed.
Heart-related symptoms vary with age. Babies may have poor feeding, sweating during feeds, rapid breathing or poor weight gain, while older children may experience breathlessness, reduced exercise tolerance, chest discomfort or fainting during activity. These symptoms do not always indicate heart disease but should be investigated if they are persistent, severe or associated with exercise.
A paediatric cardiologist may recommend an ECG, ambulatory heart rhythm monitoring or other investigations depending on your child’s symptoms. Many rhythm disorders can be managed with monitoring or medicines, while some children benefit from specialist procedures such as catheter ablation or pacemaker treatment. Seek emergency medical help if your child collapses, has severe breathing difficulty or develops blue or grey lips, tongue or skin.
How Children Are Referred
Children may be referred by a GP, paediatrician, neonatal doctor, emergency department or another specialist because of symptoms, a heart murmur, abnormal test results or a family history of heart disease. Referral information helps the cardiologist understand your child’s condition before the appointment.
Most referrals are routine, particularly when symptoms are mild or a murmur appears likely to be innocent. However, urgent assessment is needed if a baby has poor feeding with rapid breathing, if your child faints during exercise or if a significant heart rhythm problem is suspected.
Call 999 immediately if your child collapses and does not recover normally, has severe breathing difficulty, becomes difficult to wake or develops a sudden blue or grey colour. Otherwise, your healthcare professional will decide how quickly specialist review is required.
What Happens at the First Appointment?
Your first appointment with a paediatric cardiologist usually begins with a detailed discussion about your child’s health. The specialist will ask you why your child was referred and what you have noticed at home, school or during activities. You may be asked about symptoms such as breathlessness, palpitations, tiredness, fainting, feeding difficulties or changes in your child’s ability to keep up with others.
The cardiologist will then examine your child and decide whether any further tests are needed. Depending on the clinic, you may have tests such as an electrocardiogram (ECG) or echocardiogram during the same visit, while other investigations may be arranged for another day. These tests help the specialist understand how your child’s heart is structured and how well it is working.
Heart Tests Used by a Paediatric Cardiologist
The most common investigations are an electrocardiogram (ECG) and an echocardiogram. An ECG records the heart’s electrical activity and can identify rhythm or conduction problems, while an echocardiogram uses ultrasound to assess the heart’s structure, valves and blood flow. Not every child needs both tests, as investigations are chosen according to the reason for referral.
If symptoms occur only occasionally, longer heart rhythm monitoring may be recommended. A Holter monitor records the heart’s electrical activity continuously over 24 to 48 hours, while longer ambulatory monitors may be used when symptoms are less frequent. These devices allow children to continue most normal daily activities while their heart rhythm is recorded.
Some children also need an exercise test to assess how the heart responds during physical activity. This investigation can identify exercise-related rhythm changes, evaluate exercise tolerance and help guide treatment or activity advice when appropriate.
Understanding Test Results and Further Investigations
Most children only require simple heart tests, but some need more detailed investigations when additional information is required. Cardiac MRI and CT scans provide detailed images of the heart and blood vessels, while cardiac catheterisation can both diagnose and treat certain heart conditions.
The paediatric cardiologist combines these investigation results with your child’s symptoms, examination findings and family history to build a complete understanding of their heart health. Test results are always interpreted within the wider clinical picture rather than in isolation.
Following assessment, the specialist explains whether the findings are normal, require monitoring or need treatment. You should leave the appointment understanding your child’s diagnosis, any activity advice, warning symptoms and the next steps in care.
Treatment and Ongoing Care
Not every child with a heart condition needs surgery. Many conditions can be managed with regular monitoring or medicines to control heart rhythm, improve heart function or reduce the risk of complications.
If a procedure is required, the multidisciplinary cardiac team will decide whether catheter-based treatment or surgery is the most appropriate option. Operations are performed by paediatric cardiac surgeons, while cardiologists continue to diagnose, monitor and manage your child’s condition.
Your child’s care is planned by a multidisciplinary team, ensuring treatment decisions are based on the diagnosis, symptoms and long-term outlook.
Key Takeaways
- A referral does not automatically mean that your child has a serious heart condition.
- A paediatric cardiologist assesses congenital, acquired, inherited and heart-rhythm conditions.
- Your child’s medical history and physical examination help determine which tests are appropriate.
- Not every child needs an echocardiogram, advanced scan or invasive procedure.
- Highly specialised procedures may be provided by subspecialist cardiologists or cardiac surgical teams.
- Fainting or chest pain during exercise requires prompt medical assessment.
- Call 999 for collapse with poor recovery, severe breathing difficulty, unusual difficulty waking or a sudden blue or grey colour.
Frequently Asked Questions
1. What does a paediatric cardiologist do?
A paediatric cardiologist diagnoses, treats and monitors heart conditions in babies, children and young people. They assess symptoms, arrange and interpret specialist heart tests and create personalised treatment or follow-up plans where needed.
2. When should my child see a paediatric cardiologist?
Your child may be referred if they have a heart murmur, chest pain, palpitations, fainting, breathlessness, poor growth, reduced exercise tolerance, or if a heart condition is suspected before or after birth.
3. Does a referral to a paediatric cardiologist mean my child has a serious heart condition?
No. Many children referred to a paediatric cardiologist do not have a serious heart problem. A referral is simply a way to investigate symptoms or findings and provide reassurance or appropriate care if needed.
4. What tests might a paediatric cardiologist arrange?
Depending on your child’s symptoms, tests may include an electrocardiogram (ECG), echocardiogram (heart ultrasound), Holter monitor, exercise test, cardiac MRI, CT scan or cardiac catheterisation.
5. Can a paediatric cardiologist diagnose congenital heart disease before birth?
Yes. Paediatric cardiologists can assess a baby’s heart during pregnancy using a fetal echocardiogram if an antenatal scan suggests a possible heart abnormality.
6. What conditions does a paediatric cardiologist treat?
They treat a wide range of conditions, including congenital heart disease, heart rhythm disorders (arrhythmias), cardiomyopathy, myocarditis, Kawasaki disease-related heart problems, and inherited heart conditions.
7. Will my child need surgery if they have a heart condition?
Not always. Some heart conditions only require monitoring, while others may be managed with medicine or minimally invasive catheter procedures. Surgery is recommended only when it offers the safest and most effective treatment.
8. How can I prepare for my child’s cardiology appointment?
Bring details of your child’s symptoms, current medicines, previous medical records, and any family history of heart disease. Writing down your questions beforehand can also help you get the most from the consultation.
9. Can my child still play sports if they have a heart condition?
Many children with heart conditions can safely take part in physical activity, although the type and intensity of exercise depend on their diagnosis. Your paediatric cardiologist will advise which activities are appropriate.
10. Will my child need long-term follow-up with a paediatric cardiologist?
It depends on the diagnosis. Some children are discharged after a normal assessment, while others with congenital or ongoing heart conditions require regular follow-up throughout childhood and, in some cases, into adulthood.
Final Thoughts: Understanding Your Child’s Heart Care
Being referred to a paediatric cardiologist can feel worrying, but it does not always mean that your child has a serious heart condition. Many children are assessed because of a heart murmur, occasional symptoms or findings that simply need a specialist opinion. A paediatric cardiologist’s role is to understand your child’s heart health, provide clear explanations and recommend the right approach, whether that involves reassurance, monitoring or treatment.
Every child’s heart care journey is different, and specialist support can help you feel more informed and confident about the next steps. If your child needs expert assessment, seeking advice from a paediatric cardiologist in London can help identify the cause of symptoms and provide personalised guidance based on your child’s needs. With the right care and follow-up, many children with heart concerns continue to grow, learn and enjoy everyday activities safely.
References:
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- Ford, B., Lara, S. and Park, J. (2022) ‘Heart murmurs in children: Evaluation and management’, American Family Physician, 105(3), pp. 250–261. Available at: https://pubmed.ncbi.nlm.nih.gov/35289571/
- Friedman, K.G. and Alexander, M.E. (2013) ‘Chest pain and syncope in children: A practical approach to the diagnosis of cardiac disease’, The Journal of Pediatrics, 163(3), pp. 896–901.e1–e3. Available at: https://pmc.ncbi.nlm.nih.gov/articles/PMC3982288/
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- Great Ormond Street Hospital for Children NHS Foundation Trust (2025) Inherited cardiac conditions: How to talk to children about genetics and genetic testing. Available at: https://www.gosh.nhs.uk/conditions-and-treatments/conditions-we-treat/inherited-cardiac-conditions-how-to-talk-to-children-about-genetics-and-genetic-testing/
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- NHS (2026) Kawasaki disease. Page last reviewed 19 February 2026. Available at: https://www.nhs.uk/conditions/kawasaki-disease/
- University Hospital Southampton NHS Foundation Trust (no date) Diagnosis and treatment (children’s cardiac). Available at: https://www.uhs.nhs.uk/for-visitors/southampton-childrens-hospital/childrens-services/childrens-cardiac/diagnosis-and-treatment