Ebstein's Anomaly Management and Outcomes

Ebstein's anomaly is a rare congenital malformation of the tricuspid valve characterised by apical displacement of the septal and posterior leaflets, leading to variable right ventricular morphology and function. Clinical presentation ranges from prenatal hydrops and neonatal heart failure to adult-onset arrhythmias and exercise intolerance. Management strategies encompass medical therapy to control heart failure symptoms and arrhythmias, catheter-based interventions for accessory pathways, and a spectrum of surgical techniques aimed at restoring tricuspid valve competence and optimising right ventricular geometry. The cone reconstruction procedure has emerged as a preferred repair method, enabling biventricular circulation by mobilising leaflet tissue to form a conical valve apparatus. In neonates with severe circular shunts, prenatal interventions using non-steroidal anti-inflammatory drugs may improve perinatal survival by constricting the ductus arteriosus. Long-term outcomes continue to evolve, with improvements in right ventricular synchrony, reduction in regurgitant volume and enhanced exercise capacity. Risk stratification utilises imaging biomarkers and functional indices to anticipate adverse events, guide timing of repair and tailor lifelong surveillance. Despite advances, late complications such as residual regurgitation, right ventricular dysfunction and atrial arrhythmias emphasise the need for multidisciplinary care and personalised follow-up.

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Ebstein's Anomaly Management and Outcomes publication trend

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Technical terms

Cone operation: A surgical technique that mobilises and resizes tricuspid valve leaflets into a cone-shaped structure to restore valve function and improve right ventricular geometry.

Cardiovascular magnetic resonance (CMR): An imaging modality providing detailed assessment of ventricular volumes, function and tissue characteristics without ionising radiation.

Tricuspid regurgitation (TR): Backward flow of blood from the right ventricle to the right atrium due to incomplete valve closure, quantifiable by regurgitant fraction.

Circular shunt: A fetal haemodynamic condition in Ebstein's anomaly where regurgitant flow and ductal patency create a loop, often leading to hydrops and high perinatal mortality.

References

1. Ebstein’s anomaly - review of a multifaceted congenital cardiac condition. Swiss Medical Weekly (2005).
2. Impact of the cone operation on left ventricular size, function, and dyssynchrony in Ebstein anomaly: a cardiovascular magnetic resonance study. Journal of Cardiovascular Magnetic Resonance (2018).
3. Cardiac MRI predictors of right ventricular dysfunction after the Da Silva cone operation for Ebstein's anomaly. International Journal of Cardiology Congenital Heart Disease (2022).
4. Transplacental non‐steroidal anti‐inflammatory drugs versus expectant management in fetal Ebstein anomaly with circular shunt: Systematic review and meta‐analysis. Prenatal Diagnosis (2023).