Color doppler study of the uteroplacental circulation in early pregnancy complicated by threatened miscarriage

Abstract EN

Background / Aim : the study involved the presence or absence of blood flow in the intervillous space and the resistance index (RI) of the decidua spiral arteries at the chorine frond sum or the placenta.

Patients & Methods : Forty-six pregnant women (7-11 weeks) with threatened miscarriage and 15 normal pregnant women (7-11 weeks) were submitted to cool Doppler study of the uteroplacental circulation.

Cases of threatened mismanage were classified into three subgroups.

Results : subgroup A: blood flow was detected in the intervillous space and mean RI of the spiral arteries was > 0.55.

This group included 22 cases (47.82 %), 11 cases (50 %) the spontaneous miscarriage was complete and 11 cases (50 %) pregnancy continued to 20 weeks which was the period of follow up.

Subgroup B: included 19 cases (41.30 %): no blood flow was detected in the intervillous space but mean RI of the spiral arteries was > 0.55.

Two cases (10.52 %) miscarried and pregnancy continued to 20 weeks in 17 cases (89.47 %).

Subgroup C: 5 cases (10.86%) no blood flow was detected in the intervillous space and mean RI was < 0.55.

All pregnancies in this subgroup reached 20 weeks.

The overall fetal loss by spontaneous miscarriage was 28, 89 %.

Control group (normal pregnancy): blood flow was not detected in the intervillous space in all cases and mean RI of spiral arteries was < 0.55, all pregnancies continued to 20 weeks.

The differences between groups as egad the age, gravidity, parity and previous miscarriages are not statistically significant.

The differences between RI of the decidua spiral arteries of the control group and subgroups of miscarriage are statistically significant.

The differences between the outcome (incidence of spontaneous fetal loss) of the subgroups A, B and C are statistically significant.

Conclusion : cool Doppler study of the uteroplacental circulation of threatened miscarriage in the first trimester can predict the outcome of this pregnancy.