An observational study in Abnormal Uteroplacental Circulation, sponsored by Second Affiliated Hospital of Wenzhou Medical University. Not yet recruiting. Open to female participants aged 16 Years to 40 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-09-21.
Sponsored by Second Affiliated Hospital of Wenzhou Medical University · Observational
Objective:To explore the study of Doppler ultrasound in first trimester pregnancies to measure the change of uterine artery blood flow in normal pregnancies and the prediction on abortion, which provides a certain reference for the change trend of uterine artery blood flow in normal first trimester pregnancies and the prediction of Doppler ultrasound measurement in abortion.
Method:Pregnant women who underwent natural conception and single birth prenatal examination in the Obstetrics Department of the Second Affiliated Hospital of Wenzhou Medical University from October 1, 2023 to December 31, 2025 were selected as the study population. Eligible women were preliminarily screened according to the inclusion conditions of the study objects, and basic information of women in each group was compared: Maternal age, gestational time, birth time, gestational week, abortion history, maternal BMI, maternal MAP, smoking status, serum HCG, subchorionic hematoma, fetal bradycardia, left and right uterine aorta pulse index (PI), resistance index (RI) and systolic/diastolic ratio (S/D), etc. To investigate the effect of Doppler ultrasonography on the measurement of uterine artery blood flow in normal pregnancy and the prediction of abortion.
Second Affiliated Hospital of Wenzhou Medical University is the lead sponsor of 133 studies on the registry; 44 are open to participants now.
Counted across the registry records on this site, refreshed daily.
pregnant women
Healthy pregnant women Group
Inclusion Criteria:
Exclusion Criteria:
Pregnant women with recurrent pregnancy loss Group
Inclusion Criteria:
Exclusion Criteria:
healthy pregnant woman
Other: Doppler ultrasound measurement of changes in uterine artery blood flow
Spontaneous abortion of three or more consecutive sexual partners
Other: Doppler ultrasound measurement of changes in uterine artery blood flow
Doppler ultrasound measurement of changes in uterine artery blood flow
Pulsatility index
Pulsatility index of the left and right main uterine arteries
Time frame: it can be monitored for up to 12 weeks
Resistive index
Resistive index of the left and right main uterine arteries
Time frame: it can be monitored for up to 12 weeks
Systolic-to-diastolic ratio
Systolic-to-diastolic ratio of the left and right main uterine arteries
Time frame: it can be monitored for up to 12 weeks
No study locations are listed for this record.
This study is not yet recruiting, as verified in Sep 2023. You cannot join it, but the record below documents what was studied.
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Second Affiliated Hospital of Wenzhou Medical University