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.
For example, the umbilical cord length in twins is generally shorter than for singletons 3. In fetal rats, the exposure to alcohol during prenatal development is associated with a shortened umbilical cord 4. In abnormal pregnancies the frequency and velocity of fetal movements decreases 5.