1. Methods:The ultrasonographic images of 32 patients diagnosed abruptio placentae by the obstetrician and pathologist are categorized and differentiated by CDFI.

2. Objective To research the etiology of abruptio placentae and the clinical characteristic and find the early diagnosis and management.

3. Abruptio placentae occurs in 40-50% of patients with major traumatic injuries and in up to 5% of patients with minor injuries.

4. Early diagnosis and timely treatment of mild abruptio placenta may decrease fetal and neonatal mortality and diminish maternal complications.

5. The maternal Injury Severity Score, mechanism of injury, and physical findings are unable to adequately predict adverse outcomes such as abruptio placentae and fetal loss.

6. Conclusions The results suggested that ultrasonic examination has a significant clinical value for abruptio placentae.

7. A. There is a threefold increase in perinatal mortality, a twofold increase in abruptio placentae, and an increased rate of impaired fetal growth in pregnant women with preexisting hypertension.

8. Results:The data showed that patients with severe PIH were easy to suffer from abruptio, placentae intrauterine growth retardation(IUGR), fetal distress and acute left heart failure.

9. Objective To explore clinical value of color Doppler flow imaging(CDFI) for diagnosis of abruptio placentae.

10. The atypical clinical appearances and short active phase of labor are the cause of antepartum misdiagnosed. Atypical abruptio placentae is an important causes of perinatal mortality.

11. We should maintain vigilance for patients with placental factors such as placenta previa and abruptio placentae.

12. Methods : The ultrasonographic images in 76 patients with abruptio placentae were reviewed.