Relationship Between Fetal Nuchal Thickening and Crown-Rump Length in Thai Fetuses

Authors

  • Saifon Chawanpaiboon Department of Obstetrics and Gynecology, Faculty of Medicine Siriraj Hospital, Mahidol University
  • Chanchai Wantanasiri Department of Obstetrics and Gynecology, Faculty of Medicine Siriraj Hospital, Mahidol University
  • Vittaya Titapant Department of Obstetrics and Gynecology, Faculty of Medicine Siriraj Hospital, Mahidol University
  • Prakong Chuenwattana Department of Obstetrics and Gynecology, Faculty of Medicine Siriraj Hospital, Mahidol University

Keywords:

Crown-rump length, nuchal translucency

Abstract

Objective: To investigate the relationship between the Nuchal thickening (NT) and crown–rump length (CRL) in normal Thai fetuses during 10-14 weeks of gestation.
Methods: A prospective observational study was conducted. Ultrasound measurement of NT and CRL was offered for 1,000 consecutive Thai fetuses between 10-14 weeks of gestation. Regression analysis was used to analyze the relationship between the NT and CRL.
Results: The mean maternal age was 28.03 ± 5.8 yr (range 14-47 yr). The mean CRL was 54.7 ± 12.7 mm (range 10.0-82.0 mm), and the mean NT was 1.6 ± 0.60 mm (range 0.3-6.9 mm), respectively. The median gestational age was 12.0 weeks. The regression equation relating median NT to CRL was described as follows: expected Nuchal thickening (mm) = 0.437 + (0.01764 × CRL) (mm) (R2 = 0.134, p <0.001).
Conclusion: The present study offers normative data of the fetal NT in Thai fetuses, which may improve the performance of NT measurement during the first-trimester as a screening tool for chromosomal abnormalities or other congenital abnormalities in the first trimester. The present study shows that NT measurements increase with increasing CRL.Â

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Published

01-07-2008

How to Cite

Chawanpaiboon, S. ., Wantanasiri, C. ., Titapant, V. ., & Chuenwattana, P. . (2008). Relationship Between Fetal Nuchal Thickening and Crown-Rump Length in Thai Fetuses. Siriraj Medical Journal, 60(4), 184–186. Retrieved from https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/246388

Issue

Vol. 60 No. 4 (2008): Jul-Aug

Section

Original Article

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