Aortic homograft obstruction

At the Mayo Clinic from September, 1967, to November, 1972, 128 patients underwent operations in which an aortic homograft was used to establish right ventricle-to-pulmonary artery continuity. Recently, we studied 18 of these patients who had calcified, obstructed aortic homografts. Seven patients had histories of significant dysrhythmias, all of which required medication and two of which were life threatening. Seventeen of the patients had...