Fetal gender and sonographic assessment of crown-rump length

Implications for multifetal pregnancy reduction

S. Becker, Serdar Ural, T. Fehm, J. Bienstock

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
Pages (from-to)399-401
Number of pages3
JournalUltrasound in Obstetrics and Gynecology
Volume24
Issue number4
DOIs
StatePublished - Sep 1 2004

Fingerprint

Multifetal Pregnancy Reduction
Crown-Rump Length
pregnancy
fetuses
Fetus
Gestational Age
Pregnancy
Chorionic Villi Sampling
abnormalities
dating
Chromosome Aberrations
students
Patient Selection
sampling
Students

All Science Journal Classification (ASJC) codes

  • Obstetrics and Gynecology
  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology
  • Reproductive Medicine
  • Acoustics and Ultrasonics

Cite this

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Fetal gender and sonographic assessment of crown-rump length : Implications for multifetal pregnancy reduction. / Becker, S.; Ural, Serdar; Fehm, T.; Bienstock, J.

In: Ultrasound in Obstetrics and Gynecology, Vol. 24, No. 4, 01.09.2004, p. 399-401.

Research output: Contribution to journalArticle

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