Prevalence of congenital heart disease in chromosomally normal fetuses according to nuchal translucency thickness

Nuchal translucency thickness, mm	Prevalence per 1000 fetuses
3.5 to 4.4	28.9
4.5 to 5.4	90.9
≥5.5	195.1

CHD_by_nuchal_thickness.htm

Adapted from: Hyett J, Perdu M, Sharland G, et al. BMJ 1999; 318:81.

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