two patients with complex congenital heart defects ( a 4-year-old with transposition of the great arteries , ventricular septal defect , and left ventricular outflow tract obstruction and a 3 1/2-year-old with double-outlet right ventricle , subpulmonary stenosis , and complete atrio-ventricular septal defect ) suffered multiple major hemorrhages from the tracheobronchial tree ( 28 and 7 bleeding events , respectively ) .
C0040761
transposition of the great arteries
C0013069
double-outlet