[Re-do Fontan operation--a case report].

A 32-year-old woman developed heart failure. She had received Glenn operation 26 years ago and Fontan operation using valved conduit (Björk-Shiley: 21 mm) seven years ago for tricuspid atresia type 1b. She underwent extirpation of the struck prosthetic valve. Neither graft stenosis nor pressure gradient between the right atrium and the pulmonary artery were observed on postoperative right arteriography. Sternotomy on redo Fontan operation should be carefully performed for preventing breaking down the implanted valved conduit. Though the prosthetic valve was not necessary on redo Fontan operation, anticoagulation after operation should be done.