Valved apico-aortic composite conduits for left ventricular outflow tract obstructions: A 4 year experience with 27 patients

Abstract A double outlet left ventricle with a special composite prosthesis interposed between the left ventricular apex and the supraceliac abdominal aorta was created in 27 patients (16 male and 11 female). Their ages ranged from 4 to 72 years (mean 23). Preoperative hemodynamic studies demonstrated a mean (± Standard deviation) peak left ventricular systolic pressure of 213 ± 36 mm Hg with a mean left ventricular outflow gradient of 93 +- 33 mm Hg. Postoperatively, mean left ventricular systolic pressure decreased to 128 +- 26 mm Hg (p