Nuchal translucency in dichorionic twins conceived after assisted reproduction

Prenatal Diagnosis
P W HuiP C Ho

Abstract

As opposed to biochemical markers of Down syndrome, nuchal translucency (NT) was once thought to be a more reliable screening marker for high order multiple pregnancies and pregnancies conceived after assisted conception. Recent data suggested that NT in singleton fetuses from assisted reproduction technology (ART) was thicker than those from singleton pregnancies. The present study compared the thickness of NT in dichorionic twins from natural conception and assisted reproduction. A retrospective analysis for comparison of NT thickness on 3319 spontaneous singletons, 19 pairs of spontaneous twins and 27 pairs of assisted reproduction twins was performed. The median NT multiple of median (MoM) of spontaneous singletons was 1.00. For twins, the median NT MoM for pregnancies after assisted reproduction and natural conception were 1.02 and 1.07 respectively. There was no statistical difference in the NT thickness among the three pregnancy groups. Contrary to the observed increase in NT in singleton pregnancies from assisted reproduction, the NT in dichorionic twins was comparable to the spontaneous ones. The mode of conception appears to impose differential influence on singletons and twins.

References

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Citations

Dec 1, 2009·Human Reproduction·Jenni K RantaSeppo Heinonen
Apr 24, 2012·Human Reproduction Update·Anne Cathrine GjerrisAnja Pinborg
Mar 19, 2011·Current Opinion in Obstetrics & Gynecology·Annegret GeipelChristoph Berg
Feb 22, 2012·Clinical Obstetrics and Gynecology·Joaquin Santolaya, Revital Faro
Aug 8, 2014·Obstetrical & Gynecological Survey·Shanchun ZhangYunxian Yu
Dec 18, 2013·Ultrasound in Obstetrics & Gynecology : the Official Journal of the International Society of Ultrasound in Obstetrics and Gynecology·R MaymonI Ben-Ami
Sep 7, 2018·Peritoneal Dialysis International : Journal of the International Society for Peritoneal Dialysis·Daniel ChristiadiDarren M Roberts
Nov 7, 2013·Obstetrical & Gynecological Survey·Ido Ben-AmiEric Jauniaux

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