ih the 88 children with congenital heart defects , and in 20 with an extreme left-axis deviation previous to surgery , an angle of -60 degrees to -90 degrees was found , most often in children with complete a-v canals of down 's syndrome ( as well as in children with transposition of the great arteries , univentricular heart or other complicated malformations of the heart ) .
C0040761
transposition of the great arteries
C0018798
malformations of the heart