[Comparison of Doppler examination and non-stress test in the prediction of intrauterine fetal hypoxia].
OBJECTIVE
To assess the predictive value of intrauterine fetal hypoxia by Doppler examination and non-stress test (NST).


METHODS
The normal value of the peak-systolic and diastolic ratio (S/D), pulse index (PI), resistance index (RI), fast volume ratio (FVR) of different gestational age was created according to 4 326 normal pregnancy. S/D, PI, RI, FVR and NST was performed for 2 873 normal pregnancy at the last trimester. Fetal outcomes were recorded within 7 days of birth.


RESULTS
(1) S/D, PI, and RI decreased with the gestational age advancing, but FVR didn't. When S/D, PI, RI, FVR or NST appeared abnormal, the ratio of intrauterine fetal hypoxia was 62.0%, 60.7%, 63.3%, 27.0% and 75.7% respectively, as these normal, the ratio of intrauterine fetal hypoxia was 12.8%, 13.9%, 13.0%, 15.7%, 7.5% respectively. There was significant difference (P < 0.01). (2) Logistic regression showed that the predictive value of RI and NST to intrauterine fetal hypoxia was significant (P < 0.05).


CONCLUSIONS
The predictive value of NST and RI to intrauterine fetal hypoxia was stronger than other parameters. Multi-parameter may predict more accurately than any single index for intrauterine fetal hypoxia.
Department of Obstetrics, Zhuhai Maternal and Children Hospital, Zhuhai 519000, China.
Xiong
X
Liang
Dejiu
D
Zhang
Youping
Y
Xie
Feng
F
Zhu
Fongmei
F
Jing
Qingping
Q
Yi
D001783:Blood Flow Velocity; D005260:Female; D005311:Fetal Hypoxia / Q000175:diagnosis*; D006340:Heart Rate, Fetal; D006801:Humans; D011247:Pregnancy; D014469:Umbilical Arteries / Q000502:physiology