Method To compared with UA and MCA's Doppler parameter in the 44 cases umbilical cord around neck by caesarean section fetus and 61 cases by parturition fetus, take ri and VP as analysis target.

Objective:To study the value of umbilical blood stream examination and descending test of fetal head on antenatal diagnosis of cord around neck and perinatal prognosis.

U-fetal neck pressure traces can be seen is a circle around the neck, the doctor said that my umbilical cord blood flow was quite good, it should be fine.