balloon septostomy


bal·loon sep·tos·to·my

septostomy performed by cardiac catheterization with the use an of inflated balloon pulled across the interatrial septum through the foramen ovale; used in cases of transposition of the great vessels and tricuspid atresia.

bal·loon sep·tos·to·my

(bă-lūn' sep-tos'tŏ-mē) Creation of an artificial interatrial septal defect by cardiac catheterization during which an inflated balloon is pulled across the interatrial septum through the foramen ovale; used in cases of transposition of the great vessels and tricuspid atresia.