Complications of monochorionic monoamnionic placentation
Clinical signs
- extraordinaly hihg mortality 30 – 50%, mostly in utero
- cord accidents:“ fratricidal knots ” or cord entaglement around the neck or limbs,
one or both twins may die
- cord knots and entangelments happen while the fetuses move in the single amniotic cavity
- anastomoses between the placentas are multiple, usually bidirectional;
chronic fetofetal transfusion is rare
