Overview
Isolated right ventricular hypoplasia is a congenital anomaly characterized by underdevelopment of the right ventricle, potentially leading to hemodynamic compromise and requiring surgical intervention depending on severity. 1Diagnosis
Echocardiography essential for initial assessment and grading severity.
Cardiac MRI or CT angiography may provide additional structural details.
Hemodynamic evaluation through catheterization may be necessary for severe cases. 1Management
Mild Hypoplasia: Atrial septal defect (ASD) closure recommended.
Severe Hypoplasia: Right atrium-to-pulmonary artery conduit with a valve or Fontan-type procedures considered.
Postoperative monitoring for arrhythmias and sinus node dysfunction critical. 1Special Populations
Pediatrics: Surgical interventions described primarily in pediatric patients with varied outcomes including long-term arrhythmia risks. 1Key Recommendations
For patients with mild isolated right ventricular hypoplasia, surgical correction via ASD closure is recommended to improve hemodynamics. (Evidence: Moderate) 1
In cases of severe isolated right ventricular hypoplasia, right atrium-to-pulmonary artery conduit with a valve or Fontan-type operations should be considered to manage complex anatomy. (Evidence: Weak) 1
Long-term follow-up focusing on arrhythmia surveillance is essential post-surgery due to increased risk of arrhythmias and sinus node dysfunction. (Evidence: Expert opinion) 1References
1 Haneda K, Togo T, Ito Y, Ogata H, Horiuchi T, Mohri H. Surgical treatment for isolated hypoplasia of the right ventricle. The Journal of cardiovascular surgery 1992. link