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.
In a normal gestational sac, the umbilical cord is inserted into the middle of the placenta and entirely enclosed in the amniotic sac. In a velamentous insertion, the cord inserts itself into the amniotic membrane rather than in the placenta. The baby's blood vessels then stretch along the membrane between the insertion point and the placenta. Velamentous cord insertion can lead to serious pregnancy complications, such as vasa previa.