COIL: From the Latin Colligere and the Medieval French Coillir: To Gather Together. Our Mission: To encourage and support the development and implementation of collaborative online international courses as a format for experiential cross-cultural learning at SUNY, across the U.S. and around the world.
Abnormal number of vessels. 2-vessels cords. Single umbilical artery (SUA), the most common anatomical abnormality of the umbilical cord, is found in 0,2-1,1% of singleton pregnancies1, and in 6-11% of multiple pregnancies. The selection process of the missing (or existing) vessel is likely to be random, even though a right single artery is slightly more common2.
This is an example of cord prolapse. Nuchal cord loops Single umbilical cord nuchal loops are encountered in 20-33% of normal term pregnancies103. According to Larson, the occurrence of nuchal entanglement increases linearly from 5.8% at 20 weeks of gestation to 29% at 42weeks104.