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PubMed This is a summary of 17 peer-reviewed journal articles Updated
Cardiology · Ebstein Anomaly

Recognizing Symptoms and Rhythm Changes

At a Glance

Ebstein anomaly symptoms vary widely depending on age and valve severity. Infants may experience a bluish skin tint (cyanosis) and feeding difficulties, while adults typically develop shortness of breath, fatigue, and sudden rapid heart rates due to conditions like Wolff-Parkinson-White syndrome.

Ebstein anomaly is often called a “spectrum disease” because its symptoms can vary wildly from person to person [1]. While one individual may be diagnosed at birth due to severe symptoms, another may not realize they have a heart condition until they are an adult [2][3]. Understanding how symptoms change over time and the unique heart rhythm challenges associated with this condition can help you navigate your care.

Symptoms in Infants vs. Adults

The timing of when symptoms appear often depends on the severity of the tricuspid valve displacement.

  • Infants and Neonates: In the most severe cases, newborns may experience cyanosis, a bluish tint to the skin caused by low oxygen levels in the blood [4]. They may also struggle with “failure to thrive,” which means they have difficulty feeding or gaining weight because their heart is working so hard [5].
  • Adults: In adults, the heart has often compensated for the valve defect for years. Symptoms typically emerge as “progressive cardiovascular impairment” [6]. This may feel like dyspnea (shortness of breath) during exercise, unusual fatigue, or a sense that you can’t keep up with others your age [2][7].

The Role of Arrhythmias

A hallmark of Ebstein anomaly is the high incidence of arrhythmias (abnormal heart rhythms). These are often the first sign of the condition in older children and adults.

The most famous connection is with Wolff-Parkinson-White (WPW) syndrome. In WPW, the heart has an extra “electrical wire” called an accessory pathway [8]. This wire allows electrical signals to bypass the heart’s normal regulator (the AV node), causing the heart to beat dangerously fast [9].

  • Incidence: Many patients with Ebstein anomaly have at least one accessory pathway, and some have multiple accessory pathways, making their rhythm issues more complex [10][8].
  • Atriofascicular (Mahaim) Pathways: Some patients have a rarer type of extra wire that specifically connects the upper chambers to the heart’s internal electrical conduction system [11].
  • Palpitations: These rhythm issues often present as palpitations—the feeling of a racing, fluttering, or thumping heart [12].

Valve Symptoms vs. Rhythm Symptoms

It is important to distinguish between symptoms caused by the physical structure of the valve and those caused by electricity.

  1. Valve/Strain Symptoms: Caused by the “leaky” tricuspid valve (tricuspid regurgitation). This leads to right-sided heart strain, which manifests as fluid buildup (swelling in the legs or abdomen) and shortness of breath [13][14].
  2. Arrhythmia Symptoms: These are electrical “glitches.” They often come on suddenly and may include dizziness, fainting, or a sudden racing pulse [15][12].

Emergency Warning: Seek immediate medical attention if you experience fainting, severe dizziness, or a rapid heartbeat that does not resolve on its own.

About half of all patients with Ebstein anomaly also show a Right Bundle Branch Block (RBBB) on their EKG, which is a delay in the electrical signal moving through the right side of the heart [16]. While common, your doctor will monitor this to ensure it doesn’t lead to more significant heart block or contribute to heart failure [17].

To learn more about how doctors measure the severity of these symptoms, visit the Diagnosis and Classification page.

Common questions in this guide

What are the symptoms of Ebstein anomaly in infants?
Severe cases in newborns may cause cyanosis, which is a bluish tint to the skin from low oxygen levels. Infants may also struggle with feeding or gaining weight because their heart is working so hard.
What are the signs of Ebstein anomaly in adults?
Adults often experience shortness of breath during exercise, unusual fatigue, or a general decline in stamina. Many adults first discover they have the condition when they develop abnormal heart rhythms or palpitations.
How does Ebstein anomaly affect heart rhythm?
Many people with this condition have extra electrical pathways in the heart, commonly known as Wolff-Parkinson-White (WPW) syndrome. These extra pathways allow electrical signals to bypass normal regulators, causing the heart to beat dangerously fast and leading to palpitations, dizziness, or fainting.
What is the difference between valve symptoms and rhythm symptoms?
Valve symptoms result from a leaky tricuspid valve, which strains the right side of the heart and causes shortness of breath and fluid buildup. Rhythm symptoms are electrical issues that happen suddenly, causing a racing pulse, lightheadedness, or fainting.
How do doctors check for arrhythmias in Ebstein anomaly?
Because of the high risk for arrhythmias like WPW syndrome, your doctor may suggest an EKG, a Holter monitor, or a stress test. These tests look for extra electrical pathways and hidden rhythm issues.

Questions to Ask Your Doctor

Curated prompts to bring to your next appointment.

  1. 1.Does my (or my child's) EKG show a 'pre-excitation' pattern or a delta wave?
  2. 2.How can we tell the difference between symptoms caused by the valve leaking and those caused by a heart rhythm issue?
  3. 3.Given the risk of WPW, should we perform a Holter monitor or an exercise stress test to look for hidden arrhythmias?
  4. 4.If my child is 'failing to thrive' or having trouble feeding, is that directly related to heart strain from the Ebstein anomaly?
  5. 5.Are there signs of 'right bundle branch block' on my imaging or EKG, and what does that mean for my long-term rhythm health?
  6. 6.Is there any evidence of 'myocardial fibrosis' (scarring) that might increase my risk for future arrhythmias?

Questions For You

Tap a prompt to share your answer — we'll use it plus this page's context to start a tailored conversation.

References

References (17)
  1. 1

    Neonatal Ebstein repair-where are we now?

    Wackel PL, Dearani JA, Cetta F

    Annals of translational medicine 2017; (5(5)):109 doi:10.21037/atm.2017.01.19.

    PMID: 28361074
  2. 2

    Case report of Ebstein's anomaly in a young female.

    Dessalegne R, Bekele Y, Getachew S, Birhanu M

    SAGE open medical case reports 2024; (12()):2050313X241302682 doi:10.1177/2050313X241302682.

    PMID: 39588170
  3. 3

    Ebstein's anomaly with pericardial effusion in a 55-year-old lady: A case report.

    Poudel P, Pathak S, Bhattarai N

    Annals of medicine and surgery (2012) 2022; (84()):104821 doi:10.1016/j.amsu.2022.104821.

    PMID: 36582865
  4. 4

    Ebstein's Anomaly: From Fetus to Adult-Literature Review and Pathway for Patient Care.

    Ramcharan TKW, Goff DA, Greenleaf CE, et al.

    Pediatric cardiology 2022; (43(7)):1409-1428 doi:10.1007/s00246-022-02908-x.

    PMID: 35460366
  5. 5

    The American Association for Thoracic Surgery (AATS) 2024 expert consensus document: Management of neonates and infants with Ebstein anomaly.

    Konstantinov IE, Chai P, Bacha E, et al.

    The Journal of thoracic and cardiovascular surgery 2024; (168(2)):311-324 doi:10.1016/j.jtcvs.2024.04.018.

    PMID: 38685467
  6. 6

    Presentation of Asymptomatic Ebstein's Anomaly: A Case Report.

    Kongala BP, Hare H, Smith DW

    Cureus 2025; (17(1)):e77227 doi:10.7759/cureus.77227.

    PMID: 39925563
  7. 7

    Favourable outcome of Fusarium prosthetic valve endocarditis in a patient with an Ebstein anomaly.

    Lee-Jones SG, van der Westhuizen S, Taljaard J, et al.

    Southern African journal of infectious diseases 2025; (40(1)):699 doi:10.4102/sajid.v40i1.699.

    PMID: 40060086
  8. 8

    Wide QRS complex supraventricular tachycardia with negative precordial concordance: Electrocardiographic clues for Mahaim pathway with Ebstein anomaly.

    Topaloglu S, Ozeke O, Cay S, et al.

    Journal of electrocardiology 2018; (51(4)):663-666 doi:10.1016/j.jelectrocard.2018.04.003.

    PMID: 29997008
  9. 9

    High accessory pathway conductivity blocks antegrade conduction in Wolff-Parkinson-White syndrome: A simulation study.

    Haraguchi R, Ashihara T, Matsuyama TA, Yoshimoto J

    Journal of arrhythmia 2021; (37(3)):683-689 doi:10.1002/joa3.12528.

    PMID: 34141022
  10. 10

    The relevance of looking for right bundle branch block in catheter ablation of Ebstein's anomaly.

    Gonzalez-Melchor L, Nava S, Iturralde P, Marquez MF

    Journal of electrocardiology 2017; (50(6)):894-897 doi:10.1016/j.jelectrocard.2017.06.013.

    PMID: 28666538
  11. 11

    Atriofascicular Mahaim with Ebstein anomaly: A case report.

    Ueshima K, Nakamura Y, Takeno S, et al.

    Journal of arrhythmia 2017; (33(5)):508-510 doi:10.1016/j.joa.2017.06.007.

    PMID: 29021860
  12. 12

    A rare presentation of Ebstein's anomaly: left-sided accessory pathway and tricuspid stenosis.

    Schwartzman KH, Stines JR, Nayak HM, Kohli U

    Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing 2024; (67(7)):1495-1497 doi:10.1007/s10840-024-01784-0.

    PMID: 38480673
  13. 13

    The impact of tricuspid valve regurgitation severity on exercise capacity and cardiac-related hospitalisations among adults with non-operated Ebstein's anomaly.

    Buber J, Vatury O, Klempfner R, Tejman-Yarden S

    Cardiology in the young 2019; (29(6)):800-807 doi:10.1017/S1047951119000842.

    PMID: 31159904
  14. 14

    Prevention preferable to treatment: 3 case reports of patients experiencing right-sided heart failure after Ebstein anomaly correction.

    Luo M, Lin J, Qin Z, Du L

    Medicine 2017; (96(1)):e5627 doi:10.1097/MD.0000000000005627.

    PMID: 28072699
  15. 15

    Catheter ablation of macro-reentrant atrial tachycardia in adults with Ebstein anomaly: A narrative review.

    Wang NC, Wolfe NK, Trucco SM, et al.

    Heart rhythm O2 2025; (6(9)):1448-1460 doi:10.1016/j.hroo.2025.05.029.

    PMID: 41280549
  16. 16

    Accessory Pathway in Ebstein's Anomaly: Absence of Evidence Is Not Evidence of Absence.

    Yakut I, Pamuk FÖ, Arslan K, et al.

    The Journal of innovations in cardiac rhythm management 2022; (13(3)):4905-4907 doi:10.19102/icrm.2022.130304.

    PMID: 35317209
  17. 17

    Clinical aspects of myocardial fibrosis in adults with Ebstein's anomaly.

    Ciepłucha A, Trojnarska O, Kociemba A, et al.

    Heart and vessels 2018; (33(9)):1076-1085 doi:10.1007/s00380-018-1141-5.

    PMID: 29468473

This page explains Ebstein anomaly symptoms and heart rhythm changes for educational purposes. Always consult your cardiologist or pediatrician for a professional evaluation of any heart symptoms.

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