Feasibility of nuchal translucency in triplet pregnancies
Sharon Maslovitz1, Yuval Yaron, Gideon Fait
1Gynecologic Ultrasound Unit, Lis Maternity Hospital, Tel Aviv University, Tel Aviv, Israel. orshma@hotmail.co.il
Objective:
To assess the feasibility of nuchal translucency in triplets compared with singletons.
Methods:
Nuchal translucency thickness as part of routine first-trimester screening in the general population was compared between 3128 singleton pregnancies and 51 triplets (153 fetuses). Crown-rump length was also noted. The 5th, 50th, and 95th percentiles were determined and compared between the 2 groups, and regression curves of nuchal translucency measurements plotted against crown-rump length were drawn.
Results:
The mean nuchal translucency thickness was 1.23 mm for singletons and triplets. The 5th and 95th percentiles were also the same between the 2 studied groups. The regression curves of 5th, 50th, and 95th percentiles of nuchal translucency plotted against crown-rump length of triplets and singletons overlapped.
Conclusions:
Nuchal translucency values and distribution are the same in triplets and singletons, validating the utility of the cutoff values.
