Feasibility of nuchal translucency in triplet pregnancies.
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.
Maslovitz
Sharon
S
Gynecologic Ultrasound Unit, Lis Maternity Hospital, Tel Aviv University, Tel Aviv, Israel. orshma@hotmail.co.il
Yaron
Yuval
Y
Fait
Gideon
G
Gull
Ilan
I
Wolman
Igal
I
Jaffa
Ariel
A
Hartoov
Joseph
J
D000328:Adult; D018568:Crown-Rump Length; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D009333:Neck / Q000000981:diagnostic imaging* / Q000196:embryology; D011247:Pregnancy; D014310:Triplets; D016216:Ultrasonography, Prenatal