Therapy of Patients with Cardiac Malposition

Area of Science:

• Cardiology
• Pediatric Cardiology
• Congenital Heart Disease

Background:

• Positional abnormalities of the heart (dextroposition, cardiac malposition) often present with complex associated pathologies.
• These associated conditions include pulmonary pathology and significant pathophysiologic hemodynamic abnormalities.
• The primary concern is not the anatomical position but the functional impact of these defects.

Purpose of the Study:

• To outline a strategic approach for managing patients with cardiac positional abnormalities.
• To emphasize the importance of addressing secondary pulmonary and hemodynamic issues.
• To guide therapeutic decisions from initial presentation through long-term follow-up.

Main Methods:

• Initial management focuses on correcting pathophysiologic aberrations, modulating pulmonary blood flow (improvement or restriction).
• Therapeutic strategies include surgical or transcatheter interventions for simpler defects.
• Planning involves biventricular or univentricular repair based on cardiac structure, alongside management of associated defects and Fontan surgery complications.

Main Results:

• Early treatment of pathophysiologic issues is crucial for patient outcomes.
• Tailored interventions (surgical, transcatheter) are effective for specific defect types.
• Comprehensive management addresses associated defects, Fontan pathway complications, and late-emerging cardiac abnormalities.

Conclusions:

• Treatment should target the functional consequences (pulmonary and hemodynamic) of cardiac malposition, not the positional anomaly itself.
• A staged approach, from initial hemodynamic stabilization to definitive repair and long-term surveillance, is essential.
• Management requires addressing all associated cardiac defects and potential complications throughout the patient's life.