| A comparative analysis of second-trimester ultrasound dating formulae in pregnancies conceived with artificial reproductive techniques. | |
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MedLine Citation:
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PMID: 9014279 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A dataset of 64 pregnancies conceived by artificial reproductive techniques was studied to assess the accuracy of second-trimester dating formulae when these were applied in routine ultrasound clinics in different centers. Dating formulae for biparietal diameter (BPD) and femur length (FL) were derived for a gestational age range of 14-23 weeks. The best fit curves represented linear equations: gestational age (days) = 44.2 + 2 x BPD; and gestational age (days) = 67.4 + 2.3 x FL. Twelve published formulae for biparietal diameter and femur length were reviewed and systematic and random errors were calculated for these formulae when they were applied to second-trimester scan measurements in precisely dated pregnancies. Overall, published dating formulae performed well in predicting gestational age. The 95% confidence interval was 8.3 days for biparietal diameter and 10.2 days for femur length. The study confirms the accuracy of ultrasound dating in routine ultrasound clinics and supports the use of ultrasound measurement alone in preference to menstrual history for dating pregnancy. |
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Authors:
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T Mul; M Mongelli; J Gardosi |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology Volume: 8 ISSN: 0960-7692 ISO Abbreviation: Ultrasound Obstet Gynecol Publication Date: 1996 Dec |
Date Detail:
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Created Date: 1997-03-28 Completed Date: 1997-03-28 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 9108340 Medline TA: Ultrasound Obstet Gynecol Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 397-402 Citation Subset: IM |
Affiliation:
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Department of Obstetrics and Gynaecology, University Hospital, Queen's Medical Centre, Nottingham, UK. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Anthropometry Embryonic and Fetal Development* Female Femur / embryology, ultrasonography* Gestational Age* Humans Pregnancy Pregnancy Trimester, Second* Reproductive Techniques Skull / embryology, ultrasonography* Ultrasonography, Prenatal / methods* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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