All are findings asssociated with the prenatal diagnosis for Down&;s syndrome except _____

Increased umbilical flow is not seen during the prenatal screening for Down&;s syndrome, instead the flow is decreased. Reduced blood flow through the umbilical vessels and abnormal blood flow through ductus venosus(DV) in the first trimester are associated with chromosomal abnormalities, especially Down syndrome. This decrease in blood flow causes IUGR in infants born with Down syndrome. Ref: Nelson textbook of pediatrics 21st edition Pgno: 662