Ebstein's Anomaly: Symptoms, Causes, Diagnosis, Surgery Options and When to See Your Provider — What You Need to Know
Updated: 2 hours ago
Medically reviewed by Dr. Baraa Alnahhal, MD · Last reviewed: September 2026
Quick answer: What is Ebstein's anomaly and how is it treated?
Ebstein's anomaly is a rare congenital heart defect (present at birth) in which the tricuspid valve does not close properly and sits lower in the heart than it should. This can cause an enlarged heart, irregular heartbeat and heart failure. Severity ranges widely — some people never need treatment, while others need medication or tricuspid valve surgery to repair or replace the malformed valve.
TL;DR
Ebstein's anomaly is a rare congenital heart condition in which the tricuspid valve's flaps (leaflets) are abnormally shaped, may be stuck to the heart wall, and sit lower than they should. Because the flaps cannot close properly, blood leaks backward into the upper right chamber (atrium), the right atrium and non-working right ventricle can enlarge, and over time the right side of the heart can weaken, leading to heart failure.
The severity varies widely. Some people live a normal lifespan and never need treatment, while others require surgery; the average life expectancy of a child born with the condition is reported at 25 to 30 years. Most people with the defect also have a hole between the heart's upper chambers.
What this guide can and cannot tell you: This is a rare condition and the source provides no separate prevalence percentage; all statistics in this article (including the 25–30 year average life expectancy figure) come directly from the source page and its cited references.
Key facts at a glance
Key fact | What the evidence shows |
Type | Rare congenital heart defect (present at birth) |
Valve affected | Tricuspid valve — doesn't close right, sits too low |
Consequence | Blood leaks backward into right atrium; right heart enlarges; heart failure over time |
Associated defect | Most people also have a hole between the upper chambers (ASD or PFO) |
Severity | Ranges widely — mild, moderate, severe, very severe (types A–D) |
Average life expectancy (source-cited) | 25 to 30 years for children born with the condition |
What is Ebstein's anomaly?
Ebstein's anomaly is a rare congenital heart condition (present at birth). It affects the function and location of the tricuspid valve. This valve's flaps (leaflets) may have an abnormal shape and be stuck to the heart wall.
Because the flaps cannot close properly, blood leaks backward into the upper right chamber (atrium) of the heart. This leak causes fatigue and shortness of breath.
With Ebstein's anomaly, the tricuspid valve sits lower than it should in the heart. This cuts down on how much of the right ventricle (lower chamber) can pump. The right atrium and non-working right ventricle can become too large. Over time, the enlarged right side of the heart can weaken, leading to heart failure.
How is severity classified?
The severity of Ebstein's anomaly can vary depending on how far down the tricuspid valve sits and how the right ventricle performs. Some tricuspid valves might be described as "Ebsteinoid" if the valve is slightly out of place but the strict criteria for the condition are not met.
Healthcare providers classify the defect by type, from A to D, based on:
Classification factor | What is assessed |
Affected flap | Which of the valve's three flaps the disease affects |
Right ventricle | How the right ventricle looks and works |
Severity level | Whether it is mild, moderate, severe or very severe |
Associated heart problems
People with Ebstein's anomaly often have other heart problems. Most have a hole in the wall between the two upper chambers of the heart — an atrial septal defect or patent foramen ovale. Defects in the other heart valves and the left chambers of the heart can also occur. Others can have palpitations and arrhythmias that an electrophysiologist should address.
What are the symptoms of Ebstein's anomaly?
Ebstein's anomaly varies widely in how it affects people. The heart defect and its symptoms range from mild to severe, depending on the extent of the malformations.
When the condition is severe, symptoms appear shortly after birth or in the first months of life. A baby's skin may have a bluish tint (cyanosis) from a lack of oxygen in their blood, and it may be hard for them to breathe and eat.
Beyond infancy, symptoms may include rapid breathing, shortness of breath, slow weight gain, fatigue and swelling of the legs, belly or the area around the eyes.
If the disease is mild, a child may not have symptoms, or symptoms may not appear until adulthood. In adults, symptoms include a bluish tint to the skin, shortness of breath and an abnormal heartbeat (arrhythmia).
Age group | Possible symptoms |
Newborns/infants (severe cases) | Bluish skin tint (cyanosis), difficulty breathing and eating |
Beyond infancy | Rapid breathing, shortness of breath, slow weight gain, fatigue, swelling of legs, belly or around the eyes |
Adults (mild cases surfacing later) | Bluish skin tint, shortness of breath, abnormal heartbeat (arrhythmia) |
What causes Ebstein's anomaly?
In most cases, healthcare providers do not know what causes this condition. Researchers believe Ebstein's anomaly may have a link to changes in certain chromosomes or genes. Exposure to lithium, benzodiazepines or varnish during pregnancy may also have a connection to the condition.
What are the complications?
Complications of Ebstein's anomaly may include abnormal heart rhythms, heart failure and, rarely, stroke, brain abscess or heart attack.
Complication | Frequency noted |
Abnormal heart rhythms | Common complication |
Heart failure | Common complication |
Stroke | Rare |
Brain abscess | Rare |
Heart attack | Rare |
How is Ebstein's anomaly diagnosed?
Most people with Ebstein's anomaly get a diagnosis as babies or children. Healthcare providers can detect the condition in a fetus. But some people do not get a diagnosis until they are adults over 50.
A child may need tests to find out how well their heart is working:
Diagnostic test | What it does |
Cardiac MRI | Gives details of the valves and chambers |
Echocardiogram | An ultrasound of the heart; checks structure and function of valves and chambers |
Electrocardiogram (EKG) | Measures electrical impulses; can detect an abnormal heart rhythm |
Exercise stress test | An EKG performed while walking or pedaling; measures how well the heart functions when it works hard |
Holter monitor | Worn for 24 to 48 hours to collect data about heart rhythm and heart rate |
How is Ebstein's anomaly treated?
Treatment depends on how severe the symptoms are. If symptoms are mild or absent, the healthcare provider may monitor the heart and watch for changes. If there are signs of heart failure, cyanosis or arrhythmia, medication may be given to help manage them.
As an adult, physical activity limits may help if you have an enlarged heart or a history of arrhythmia. Follow your provider's advice.
Is surgery needed?
An infant may have surgery to put in a shunt (a fabric graft between two arteries) that helps move blood to the lungs, and may have another operation later on.
Tricuspid valve surgery for children or adults may improve valve function for the long term. This involves repairing or replacing the malformed valve:
Surgical option | Detail |
Repair | Preferred when there is enough tissue; uses the patient's own tissue |
Replacement | A mechanical valve or a biological-tissue valve when repair is not an option; a mechanical valve requires lifelong medication to prevent blood clots |
During surgery, the provider may also fix the hole between the heart's upper chambers or treat arrhythmia. These treatments may include catheter ablation or a pacemaker. Rarely, a heart transplant may be needed if other treatments have failed.
Do people need antibiotics before dental work?
Some people with Ebstein's anomaly need to take antibiotics before getting dental work. This protects them from a heart infection.
What is the prognosis?
The prognosis for Ebstein's anomaly varies widely. Some fetuses and infants with this heart defect do not survive. Other people live a normal lifespan and never need treatment. In general, the prognosis is better with a mild form of the disease.
When diagnosed in infancy, the defects are usually more severe. Children who survive to adulthood have a milder form of the disease, but they may develop arrhythmias and heart failure. If this occurs, they may need surgery to repair or replace the tricuspid valve and fix other related heart problems.
People who have surgery may continue to have heart problems and need another surgery. The average life expectancy of a child born with this condition is reported at 25 to 30 years.
When should you see a healthcare provider?
After surgery, follow-up should occur within four weeks, then every three to six months. One year after surgery, annual checkups are needed — and these visits should continue throughout life — so a provider can detect any changes in heart function. Adults need regular checkups as well, which will likely include repeats of diagnostic tests.
Tell the provider if symptoms get worse or new ones develop, including bluish skin, decreased energy, fluid retention or a rapid heartbeat.
What questions should I ask the provider?
How severe is my (or my child's) disease?
Will surgery be needed?
How soon will surgery be needed?
Will long-term medication be needed?
Why individualized, lifelong care matters
Ebstein's anomaly is one of the most variable congenital heart conditions a family can encounter. The same diagnosis can mean a child who never needs treatment and grows into a normal adult life, or an infant who requires early shunt surgery and lifelong surveillance. What unites every case is that the tricuspid valve sits too low and leaks, gradually enlarging the right side of the heart — which is why monitoring never truly ends. Because the defect frequently travels with a hole between the upper chambers and rhythm disturbances, care almost always involves more than one specialist, and decisions like valve repair versus replacement carry long-term consequences (a mechanical valve, for example, means lifelong blood-clot medication). The source is candid about this uncertainty, and the honest takeaway for patients is simple: stay connected to a cardiologist who knows this defect, report any new symptom immediately, and let the scheduled checkups do their job across your entire lifetime.
Ebstein's anomaly looks different from person to person. That may make it hard to know what's ahead. Your child's healthcare provider is in the best position to tell you about their specific case. Don't be afraid to ask questions about how to support your child.
Conclusion
Your next step: If you or your child has Ebstein's anomaly, keep every scheduled cardiac checkup for life and contact the provider promptly for worsening or new symptoms such as bluish skin, decreased energy, fluid retention or a rapid heartbeat. Anyone with an abnormal heartbeat, unexplained shortness of breath or swelling in the legs or belly — especially with a known or suspected heart defect — should seek a medical evaluation. This article is educational only and is not a substitute for professional medical advice, diagnosis or treatment. Always consult a qualified healthcare provider about your individual condition.
Frequently asked questions
What is Ebstein's anomaly?
A rare congenital heart defect (present at birth) in which the tricuspid valve does not work as it should and is not in the right place.
What exactly goes wrong with the valve?
The tricuspid valve's flaps (leaflets) may have an abnormal shape, be stuck to the heart wall, and sit lower in the heart than they should.
What happens to the heart because of the defect?
Blood leaks backward into the upper right chamber (atrium), the right atrium and non-working right ventricle can enlarge, and over time the right side of the heart can weaken, leading to heart failure.
How common is Ebstein's anomaly?
It is a rare heart condition; the source does not give a specific prevalence percentage.
What symptoms do newborns show?
In severe cases, symptoms appear shortly after birth — bluish skin tint (cyanosis) from low oxygen, and difficulty breathing and eating.
What symptoms appear later in childhood?
Rapid breathing, shortness of breath, slow weight gain, fatigue and swelling of the legs, belly or area around the eyes.
What symptoms appear in adults?
A bluish tint to the skin, shortness of breath and an abnormal heartbeat (arrhythmia).
Can mild Ebstein's anomaly have no symptoms?
Yes — if the disease is mild, a person may have no symptoms or symptoms may not appear until adulthood; some are not diagnosed until they are adults over 50.
What causes Ebstein's anomaly?
In most cases the cause is unknown. Researchers believe there may be a link to changes in certain chromosomes or genes, and exposure to lithium, benzodiazepines or varnish during pregnancy may also be connected.
Can it be detected before birth?
Yes — healthcare providers can detect the condition in a fetus.
How is severity measured?
Providers classify the defect by type (A to D) based on which of the three valve flaps is affected, how the right ventricle looks and works, and whether severity is mild, moderate, severe or very severe.
What does "Ebsteinoid" mean?
A valve that is slightly out of place but does not meet the strict criteria for Ebstein's anomaly.
What other heart problems often accompany it?
Most people have a hole between the upper chambers (atrial septal defect or patent foramen ovale). Defects in other valves and left chambers can also occur, along with palpitations and arrhythmias.
What complications can occur?
Abnormal heart rhythms, heart failure and, rarely, stroke, brain abscess or heart attack.
How is it diagnosed?
Through cardiac MRI (details of valves and chambers), echocardiogram (ultrasound of heart structure and function), EKG (electrical impulses), exercise stress test and a Holter monitor worn for 24 to 48 hours.
Does everyone need treatment?
No. With mild or no symptoms, providers may simply monitor the heart and watch for changes.
When are medicines used?
If there are signs of heart failure, cyanosis or arrhythmia, medication may be given to help manage them.
Are there activity limits for adults?
Physical activity limits may help adults with an enlarged heart or a history of arrhythmia — follow the provider's advice.
What surgery might an infant need?
A shunt (fabric graft between two arteries) to help move blood to the lungs, with possibly another operation later.
What is tricuspid valve surgery?
Repair or replacement of the malformed valve to improve valve function long term. Surgeons prefer repair when there is enough tissue because it uses the patient's own tissue.
What if the valve must be replaced?
A mechanical valve or a biological-tissue valve can be used. A mechanical valve requires lifelong medication to prevent blood clots.
Can arrhythmias and the chamber hole be treated during surgery?
Yes — catheter ablation or a pacemaker may be used, and the hole between the upper chambers can also be fixed.
When is a heart transplant considered?
Rarely, if other treatments have failed.
Why might antibiotics be needed before dental work?
Some people with Ebstein's anomaly take antibiotics before dental work to protect against a heart infection.
What is the prognosis?
It varies widely. Some fetuses and infants do not survive; others live a normal lifespan and never need treatment. In general, a mild form has a better outlook.
What is the average life expectancy?
The source cites a reported average of 25 to 30 years for a child born with the condition.
Do children diagnosed in infancy have severe forms?
Usually yes; children who survive to adulthood tend to have a milder form, but they may develop arrhythmias and heart failure requiring valve surgery.
What follow-up is needed after surgery?
A visit within four weeks, then every three to six months, then annual checkups — continuing throughout life. Adults also need regular checkups, likely with repeated diagnostic tests.
When should I contact the provider?
If symptoms worsen or new ones develop: bluish skin, decreased energy, fluid retention or a rapid heartbeat.
What questions should I ask?
How severe the disease is, whether surgery is needed, how soon it would be needed, and whether long-term medication is required.
External references
Holst KA, Connolly HM, Dearani JA., Methodist DeBakey Cardiovasc J 2019 — Ebstein's Anomaly
Ramcharan TKW, et al., Pediatr Cardiol 2022 — Ebstein's Anomaly: From Fetus to Adult
Sharma N, et al., J Reprod Infertil 2018 — Ebstein Anomaly with Pregnancy
Singh DP, et al., StatPearls 2024 — Ebstein Anomaly and Malformation
References
Disclaimer: This article is for educational purposes only and does not replace professional medical advice, diagnosis or treatment. Always consult a qualified healthcare provider about your individual condition.
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