[Blalock-Hanlon procedure for mitral atresia with normal aortic valve].

We report two cases of mitral atresia with normal aortic valve. First case was a 16 day-old girl with double outlet right ventricle, and underwent surgical procedure for three times as palliative treatments. The first surgical management involved simultaneous ligation of patent ductus arteriosus and pulmonary artery banding. Then balloon atrioseptostomy (BAS) and Blalock-Taussig shunt were performed after one month of the initial operation, because of severe cyanosis and right pulmonary branch stenosis. Third one was Blalock-Hanlon procedure. Second case was a two month-old boy with pulmonary atresia. Before the admission to our hospital, BAS was performed on this patient. However interatrial communication was not enough, so he underwent Blalock-Hanlon procedure and Blalock-Taussig shunt simultaneously. After these surgical treatments, both patients have done well with minimum interatrial pressure gradient. Early phase surgical maneuver for the atrioseptostomy should have been considered in these two cases.