By how much does increased nuchal translucency increase the risk of adverse pregnancy outcome in chromosomally normal fetuses? A study of 16 260 fetuses derived from an unselected pregnant population.
Objective: In this study we aimed to estimate the magnitude of a possible increase in risk of adverse outcome in fetuses with normal karyotype and increased nuchal translucency (NT), and to determine bow well NT measurements can distinguish between fetuses with normal and adverse outcome. Methods: We studied 16260 consecutive fetuses with normal karyotype derived from an unselected pregnant popula