Korean J Obstet Gynecol Search


Korean Journal of Obstetrics & Gynecology 1997;40(7):1361-1371.
Published online January 1, 2001.
Transvaginal Color Doppler Imaging in the Assessment of Utero-placental Blood Flow in Normal and Abnormal Early Pregnany.
Young Ja Park, Kyung Il Kang, Kum Ja Park
Park Women's Clinic, Seoul, Korea.
Flow velocimetry waveforms of the uterine artery and subtrophoblastic blood flow were analyzed at normal early pregnancy, missed abortion and blighted ovum, by using transvaginal color Doppler ultrasonography. Results show that a progressive fall in S/D ratio and RI with advancing in gestation. Among the three groups, the S/D ratio and RI of both uterine arteries were not a significant difference in all gestational age. Characteristic subtrophoblastic blood flows were obtained in 60.3%, 47.2% and 53.3% of normal pregnancy, missed abortion and blighted ovum, respectively. The S/D ratio and RI of subtrophoblastic blood flow were not a significant difference among the three groups. Although the number of cases studied is small and not prospective study, the further study about this will give us some understanding to the pathophysiology of early pregnancy failure.
Key Words: Color Doppler imaging, Early pregnancy, Blighted ovum, Missed abortion
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