Newmomsforum - Let's talk about babies who have two vessel cords, also known as SUA (Single Umbilical Artery). Typically, an umbilical cord has two arteries and one vein (left side pic).
![An Absent Right Umbilical Artery Versus Absent Lt and the Prognostic Implications for the Fetus - Jennifer Durant, Douglas Helm, Karen Having, Joy Guthrie, 2015 An Absent Right Umbilical Artery Versus Absent Lt and the Prognostic Implications for the Fetus - Jennifer Durant, Douglas Helm, Karen Having, Joy Guthrie, 2015](https://journals.sagepub.com/cms/10.1177/8756479314563161/asset/images/large/10.1177_8756479314563161-fig1.jpeg)
An Absent Right Umbilical Artery Versus Absent Lt and the Prognostic Implications for the Fetus - Jennifer Durant, Douglas Helm, Karen Having, Joy Guthrie, 2015
![Fetal Conversion of a 3‐Vessel to 2‐Vessel Umbilical Cord: Sonographic Depiction - Gerscovich - 2013 - Journal of Ultrasound in Medicine - Wiley Online Library Fetal Conversion of a 3‐Vessel to 2‐Vessel Umbilical Cord: Sonographic Depiction - Gerscovich - 2013 - Journal of Ultrasound in Medicine - Wiley Online Library](https://onlinelibrary.wiley.com/cms/asset/3b373d2c-f845-4541-aab4-12c491dbcbcc/jum20133271303-fig-0001-m.jpg)