Coiling characteristics of umbilical cords in breech vs. vertex presentation

Yifat Ochshorn, Guy Bibi, Jessica Ascher-Landsberg, Michael J. Kupferminc, Joseph B. Lessing, Ariel Many*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


Objective: To compare selected umbilical cord parameters, especially cord coiling, between breech and vertex presentations. Methods: We prospectively collected umbilical cords from uncomplicated breech and vertex obtained during elective term cesarean deliveries. We compared various cord parameters between the two groups as well as data regarding obstetric history and pregnancy outcome. Results: We evaluated 55 umbilical cords from breech and 55 from vertex deliveries. Umbilical cord length (56.93 cm vs. 63.95 cm, P=0.05), number of coils (5.1±0.4 vs. 11.7±0.6, P<0.0001) and umbilical cord index (UCI) (0.09 coils/cm vs. 0.18 coils/cm, P<0.0001) were all significantly lower for breech presentations and remained significant following multivariate analysis. Conclusion: We document significant differences in umbilical coiling and the UCI between breech and vertex presentation. The precise reason for these differences is still unclear.

Original languageEnglish
Pages (from-to)525-528
Number of pages4
JournalJournal of Perinatal Medicine
Issue number5
StatePublished - 1 Sep 2009
Externally publishedYes


  • Breech presentation
  • Fetus
  • Umbilical coiling index
  • Umbilical cord
  • Vertex presentation


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