Skeletonized Handmade Valved Conduit: A Novel Approach for Transannular Repair in Absent Pulmonary Valve Syndrome

Area of Science:

• Pediatric Cardiology
• Congenital Heart Surgery
• Biomaterials in Medicine

Background:

• Absent pulmonary valve syndrome poses significant surgical challenges in infants, particularly concerning airway compression from dilated pulmonary arteries.
• Reconstruction of the right ventricular outflow tract (RVOT) is complex due to anatomical limitations and the need for durable valve function.

Purpose of the Study:

• To introduce and evaluate a novel half-skeletonized handmade valved conduit for transannular RVOT repair in an infant with absent pulmonary valve syndrome.
• To assess the efficacy of this technique in relieving airway obstruction and ensuring sustained RVOT function.

Main Methods:

• A 6-month-old infant with absent pulmonary valve syndrome, trisomy 21, and laryngomalacia underwent transannular repair using a custom-made valved conduit.
• The conduit was constructed from expanded polytetrafluoroethylene (ePTFE) and designed to minimize airway compression.
• Postoperative assessment included imaging for bronchial decompression and echocardiography for valve function.

Main Results:

• The handmade valved conduit successfully reconstructed the RVOT, providing effective relief from bronchial compression.
• Postoperative imaging demonstrated significant decompression of the airways.
• Echocardiography confirmed sustained and satisfactory valve function at the 1-year follow-up.

Conclusions:

• This half-skeletonized handmade valved conduit offers an effective solution for RVOT reconstruction in absent pulmonary valve syndrome, addressing limitations of traditional homografts.
• The technique shows potential for broader application in managing congenital heart defects requiring complex RVOT reconstruction, particularly in cases with associated airway issues.