Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 1,056

The DOI matches its Crossref record.

Fetal nuchal translucency: ultrasound screening for chromosomal defects in first trimester of pregnancy.

Open access
Nicolaides, K. H., Azar, G., Byrne, D., Mansur, C., Marks, K.·1992·BMJ

Abstract

OBJECTIVE: To examine the significance of fetal nuchal translucency at 10-14 weeks' gestation in the prediction of abnormal fetal karyotype. DESIGN: Prospective screening study. SETTING: The Harris Birthright Research Centre for Fetal Medicine, King's College Hospital, London. SUBJECTS: 827 fetuses undergoing first trimester karyotyping by amniocentesis or chorionic villus sampling. MAIN OUTCOME MEASURE: Incidence of chromosomal defects. RESULTS: The incidence of chromosomal defects was 3% (28 of 827 cases). In the 51 (6%) fetuses with nuchal translucency 3-8 mm thick the incidence of chromosomal defects was 35% (18 cases). In contrast, only 10 of the remaining 776 (1%) fetuses were chromosomally abnormal. CONCLUSION: Fetal nuchal translucency > or = 3 mm is a useful first trimester marker for fetal chromosomal abnormalities.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1136/bmj.304.6831.867

Cites

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cited by

See all 1,056

Metadata

Authors
Nicolaides, K. H., Azar, G., Byrne, D., Mansur, C., & Marks, K.
Venue
BMJ
Publisher
BMJ
Published
1992-04-04
Volume
304
Issue
6831
Pages
867-869
ISSN
  • 0007-1447 (ISSN-L)
  • 0959-8138
  • 1468-5833
OpenAlex
W1964591473
Cited by
1,056
References
0
FWCI
21.16
Type
journal article
Language
en
Open access
bronze

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review

How to cite

Cite CoChat for the checks on this page, and the paper for its own findings.

This page
CoChat. (2026). Citation check: Fetal nuchal translucency: ultrasound screening for chromosomal defects in first trimester of pregnancy. https://app.cochat.ai/papers/10.1136/bmj.304.6831.867
The paper
Nicolaides, K. H., Azar, G., Byrne, D., Mansur, C., & Marks, K. (1992). Fetal nuchal translucency: ultrasound screening for chromosomal defects in first trimester of pregnancy. BMJ. https://doi.org/10.1136/bmj.304.6831.867

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.