Adults with congenital heart disease now live significantly longer due to major medical advances. However, many eventually face the challenge of systemic right ventricle failure. This complex condition arises when the morphologic right ventricle must support the entire systemic circulation. It typically occurs in patients with congenitally corrected transposition or those following atrial switch surgery. Since the right ventricle is not naturally designed for high-pressure workloads, it often undergoes maladaptive structural and electrical remodeling.

Pathophysiology of Systemic Right Ventricle Failure

Chronic systemic loading promotes inflammatory changes and significant fibrotic remodeling. These alterations create a dangerous substrate for both atrial and ventricular arrhythmias. Furthermore, these rhythm disturbances establish a vicious cycle. They exacerbate systemic right ventricle failure through loss of atrioventricular synchrony and tachycardia-mediated impairment. Because these patients are uniquely sensitive to dyssynchrony, maintaining a stable rhythm is crucial for mechanical preservation. Therefore, early detection of electrical instability remains a top clinical priority.

Current Management and Device Therapy

Contemporary management strategies have expanded considerably in recent years. For instance, catheter ablation and conduction system pacing offer new therapeutic pathways for complex cases. Moreover, cardiac resynchronization therapy (CRT) is increasingly utilized to address pacing-induced dyssynchrony. However, clinicians must carefully time these interventions because patient selection criteria remain limited. Consequently, integrating longitudinal imaging with electrophysiologic phenotyping allows for more personalized risk assessment. This multidisciplinary approach helps clinicians preserve systemic right ventricular function for as long as possible.

Frequently Asked Questions

Which patients are most at risk for systemic RV failure?

Patients who underwent Mustard or Senning procedures for d-TGA and those with congenitally corrected transposition (ccTGA) are at the highest risk.

How do arrhythmias impact the systemic right ventricle?

Arrhythmias reduce cardiac output and cause mechanical dyssynchrony. These factors worsen the strain on a ventricle that is already struggling with high systemic pressures.

What are the latest therapeutic options for these patients?

Advances include conduction system pacing and specialized cardiac resynchronization therapy. Recent 2025 guidelines also emphasize guideline-directed medical therapy for heart failure in this population.

Disclaimer: This content is for informational and educational purposes only. It does not constitute professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Refer to the latest local and national guidelines for clinical practice.

References

Rojas SF et al. Managing and predicting electrical and mechanical failure in the systemic right ventricle. Curr Opin Cardiol. 2026 May 08. doi: 10.1097/HCO.0000000000001308. PMID: 42100847.

Brida M et al. Recent advances in congenital heart disease with a systemic right ventricle: new insights for heart failure treatment from last EURO-ACHD Congress 2025. PMC. 2026.

Gatzoulis MA et al. Right Ventricular Electrophysiology and Arrhythmias in Adults With Congenital Heart Disease: Scientific Basis for Management. PubMed. 2025. PMID: 39543210.