Miscarriage or stillbirth is the most common risk of cordocentesis, and yet the most critical. Every 1 or 2 in 100 pregnancies are affected by this condition. However, not only do miscarriages act as risks of cordocentesis; but there are more, including temporarily slowed heart rate of the fetus, as well as bleeding of the fetus, umbilical cord hematoma, and transfer of infections from the mother to the child.