Umbilical Cord Coiling and Zygosity: Is there a Link?

INTRODUCTION

The aim of this study was to analyze abnormalities of umbilical coiling index (UCI) in twin gestation to test whether the coiling is genetically influenced by zygosity.

METHODS

Data retrieved comprised gestational age (GA), chorionicity, fetal gender, and UCI.

RESULTS

The mean UCI of hypercoiled cords in monochorionic placentas was 0.55 coils/cm and 0.49 coils/cm in dichorionic placentas with discordant fetal gender (P = 0.2629).

DISCUSSION: In conclusion, no significant statistical difference between UCI in monochorionic and dichorionic twin placentas with discordant fetal gender was identified, suggesting that zygosity does not play a role in umbilical coiling induction.