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Circulation, Vol 53, 525-532, Copyright © 1976 by American Heart Association

ARTICLES

Late postoperative hemodynamic results and cineangiocardiographic findings after Mustard atrial baffle repair for transposition of the great arteries

PM Clarkson, JM Neutze, BG Barratt-Boyles and PW Brandt

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 infrequently encountered in patients with an essentially intact ventricular septum. Left ventricular outflow tract obstruction was found in eight patients. In three it was present after satisfactory but incomplete surgical relief and in five it had not been recognized prior to operation. In only one of the latter patients was the obstruction important. Seventeen patients were operated on prior to one year of age. While baffle obstruction was confined almost entirely to these patients, the five youngest patients, aged one to nine weeks at operation, had adequate pulmonary and caval compartments at restudy two to three years later.

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