Signs and symptoms of<unk>  during pregnancy include blood vessel compression, decrease in blood supply to the fetus, and impaired growth and development of the fetus. Blood tests taken in the second trimester may reveal increased levels of serum human chorionic gonadotropin and reduced levels of alpha-fetoprotein. The mother may also experience vaginal bleeding, particularly in the third trimester. Women with<unk>  may not experience any symptoms throughout pregnancy. During delivery, there may be slow or abnormal fetal heart rate patterns and there may be excessive bleeding or hemorrhage, particularly if the fetal vessels rupture.
Velamentous cord insertion
Neural clique
Vaginal septum
Uterine septum
Fetal movement
Placental expulsion
Peritomy
Circumvallate placenta