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Although valved venous homografts (VVHs) are used for establishing right ventricle-to-pulmonary artery continuity in some complex heart defects, the tissue changes that occur in situ have not been described. We review the gross and microscopic changes observed in explanted VVH conduits and their effects on functionality.

Pathology of valved venous homografts used as right ventricle-to-pulmonary artery conduits in congenital heart disease surgery