Baffle Repair for Transposition of the Great Arteries

Forty-nine patients with transposition of the great arteries who underwent a Mustard atrial baffle repair between 1964 and 1971 were assessed late postoperatively. There have been five late deaths: two related to baffle obstruction, two from noncardiac causes, and one sudden and unexpected. Hemodynamic data were available in 42 patients and autopsy in four. Obstruction of the lower venous channel was not encountered. Three patients had severe obstruction of the upper venous channel and in four there was mild restriction. Two patients had severe pulmonary venous obstruction resulting in late death; mild asymptomatic obstruction could not be excluded with certainty in six patients. Tricuspid incompetence was