The association of crown-rump length discordance in twin gestations with adverse perinatal outcomes

Judy Tai*, William A. Grobman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

Objective: The purpose of this study was to evaluate the association between the crown-rump length (CRL) difference in twin gestations and adverse pregnancy outcome. Study Design: Women with a first trimester ultrasound scan of a twin pregnancy who delivered between June 2000 and March 2006 at Northwestern Memorial Hospital were identified. The association between the difference in CRLs and pregnancy outcomes was explored. Results: For the 178 twins who were eligible for the study, the median difference in CRLs was 4.2% and the median difference in birthweights was 9.3%. Twins with a CRL difference of >85th percentile (11.1%) were more likely to have discordant birthweights and to have at least 1 of the pair be small-for-gestational age, be admitted to the special care nursery, and have perinatal morbidity. Conclusion: CRL differences of >85th percentile are associated with several measures of adverse perinatal outcome.

Original languageEnglish (US)
Pages (from-to)369.e1-369.e4
JournalAmerican journal of obstetrics and gynecology
Volume197
Issue number4
DOIs
StatePublished - Oct 2007

Keywords

  • crown-rump length
  • discordance
  • twins

ASJC Scopus subject areas

  • Obstetrics and Gynecology

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