Patch plasty repair. A longitudinal incision is performed in the concavity of the aortic arch (across the stenotic area). A patch of autologous arterial wall is harvested from the anterior wall of the main pulmonary artery (figure inset). This patch, which is rather large and showed excellent elastic and handling characteristics, is sutured with a continuous resorbable thread to enlarge the longitudinal incision of the aortic arch. The defect on the pulmonary artery is patched with autologous pericardium. This figure shows the reconstruction in patient number 5. A subaortic membrane was resected and an abnormal right subclavian artery was reimplanted on the right common carotid artery.