Umbilical hemodynamics and the perinatal outcome

Aim: To investigate the variation of resistant parameters of fetal umbilical artery blood flow in normal and pathologic pregnancy and its relationship with the perinatal outcome. Methods: Fetal umbilical artery blood flow in 110 cases of the normal and patients were examined within one week before labour while their clinical material statistics were collected. Results:In pathologic pregnancy,the umbilical artery blood flow parameter (S/D) was significantly higher than that of normal pregnancy and the incident rate of the adverse perinatal outcome was higher when compared with the S/D normal group, S/D guarding group and S/D abnormal group. Conclusion: Fetal umbilical blood flow velocity parameters using doppler ultrasonography is a simple, no wounded and efficient method in perinatal control and set S/D guarding line as 2.20, dangerous line as 2.66 has clinical meaning in diagnosis of intrauterine hypoxia.