| Fetal gender and sonographic assessment of crown-rump length: implications for multifetal pregnancy reduction. | |
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MedLine Citation:
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PMID: 15343593 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVES: Fetal size is a common criterion for the selection of an individual fetus to be reduced during multifetal pregnancy reduction. We investigated whether a difference in crown-rump length (CRL) exists between male and female fetuses at 9-13 weeks' gestation. METHODS: A total of 883 singleton pregnancies was evaluated at the time of chorionic villus sampling. The mean gestational age at the time of intervention was 10.9 weeks. Pregnancies were dated by certain last menstrual period (LMP). Pregnancies with uncertain dating by LMP or with a sonographic difference of gestational age > 1 week compared with LMP were excluded, as were all cases with chromosomal abnormalities. CRL differences between male and female fetuses were compared using Student's t-test. RESULTS: A total of 417 female and 466 male fetuses fulfilled our study criteria. Their gestational ages ranged between 9.3 and 13.9 weeks. We found no significant difference in size between the male and female fetuses. CONCLUSION: Using the CRL to guide multifetal pregnancy reduction should not result in a clinically significant selection of either gender. |
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Authors:
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S Becker; S Ural; T Fehm; J Bienstock |
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Publication Detail:
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Type: 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: 24 ISSN: 0960-7692 ISO Abbreviation: Ultrasound Obstet Gynecol Publication Date: 2004 Sep |
Date Detail:
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Created Date: 2004-09-02 Completed Date: 2004-10-05 Revised Date: 2004-11-17 |
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: 399-401 Citation Subset: IM |
Copyright Information:
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Copyright 2004 ISUOG |
Affiliation:
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Department of Gynecology and Obstetrics, Division of Maternal Fetal Medicine, Johns Hopkins Hospital, Baltimore, USA. sven.becker@med.uni-tuebingen.de |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Crown-Rump Length* Female Gestational Age Humans Male Pregnancy Pregnancy Reduction, Multifetal* Pregnancy, Multiple* Prospective Studies Sex Characteristics* Sex Factors Ultrasonography, Prenatal / methods* |
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