European Journal of Anatomy

Official Journal of The Spanish Society of Anatomy
Cover Volume 22 - Number 6
Eur J Anat, 22 (6): 483-488 (2018)

Umbilical cord twist – Does it play a role in placental morphology?

Suresh Narayanan1, Mrudula Munibala2

1Department of Anatomy, Sri Manakula Vinayagar Medical College and Hospital, Puducherry, India, 2Department of Obstetrics and Gynecology, Sri Manakula Vinayagar Medical College and Hospital, Puducherry, India

ABSTRACT Studies have described the placental morphology and its changes in a pathological scenario. But the role of a twisting pattern of umbilical vessels in determining the placental morphology of uncomplicated pregnancy has not been discussed. The objective of the study was to determine the clinical significance of umbilical cord twist in determining the umbilical cord coiling index, the diameter of hyrtl’s anastomosis, branching pattern of the placental vasculature, placental weight, Eccentricity index and Cord centrality index. The proportion of umbilical cords with left and right twist were 246 (78.6%) and 67 (21.4%) respectively. The right twisted cords had significant higher umbilical artery diameter, higher umbilical cord coiling index and preferential magistral pattern of blood vessels. This proves that twisting of the cord might play a minor role in altering the blood flow and determining the vasculature pattern but not sufficient enough to influence the placental weight, the shape of the placenta and umbilical cord insertion.

Keywords: Umbilical twist – Coiling index – Hyrtl’s anastomosis – Placental vasculature

European Journal of anatomy
ISSN 2340-311X (Online)