Construction of modern Australian first trimester ultrasound dating and growth charts

McLennan, A. C. and Schluter, P. J. (2008) Construction of modern Australian first trimester ultrasound dating and growth charts. Journal of Medical Imaging and Radiation Oncology, 52 5: 471-479. doi:10.1111/j.1440-1673.2008.01992.x


Author McLennan, A. C.
Schluter, P. J.
Title Construction of modern Australian first trimester ultrasound dating and growth charts
Journal name Journal of Medical Imaging and Radiation Oncology   Check publisher's open access policy
ISSN 1754-9477
Publication date 2008-10
Sub-type Article (original research)
DOI 10.1111/j.1440-1673.2008.01992.x
Volume 52
Issue 5
Start page 471
End page 479
Total pages 9
Editor David Ball
Place of publication Carlton, Vic., Australia
Publisher Wiley-Blackwell Publishing Asia
Collection year 2009
Language eng
Subject C1
920210 Nursing
111099 Nursing not elsewhere classified
111006 Midwifery
Abstract Accurate pregnancy dating is vital to obstetric management. However, first trimester fetal charts commonly used in Australia rely on data reported more than three decades ago. This study reports first trimester dating and growth charts for crown-rump length between 5 and 14 weeks of gestation and biparietal diameter between 9 and 14 weeks of gestation on an Australia population using modern real-time ultrasound equipment. All consenting eligible women attending a large Sydney clinic for first trimester ultrasound between March 2005 and December 2006 were recruited. Measurements were carried out to Australasian Society for Ultrasound in Medicine standard protocols. Statistical analyses were undertaken using polynomial regression models and thorough diagnostic checks made. Overall 396 eligible women consented to the study, with 268 between 9 and 14 weeks of gestation. The average participant age was 34 years (range 22–45 years), 371 and all yielded valid biometry measurements. Equations, means and 90% reference intervals for crown-rump length measurements and biparietal diameter measurements were derived using polynomial regression models. Thorough residual and diagnostic checks were made. Once validated by others, we believe they will warrant consideration for use by Australasian Society for Ultrasound in Medicine.
Keyword australian chart
biometry
biparietal diameter
crown-rump length
first trimester prenatal
Q-Index Code C1
Q-Index Status Confirmed Code
Additional Notes Journal compilation © 2009 Royal Australian and New Zealand College of Radiologists

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2009 Higher Education Research Data Collection
School of Nursing and Midwifery Publications
 
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