An observational study in Threatened Miscarriage, sponsored by Cairo University. Completed at 1 site in Egypt. Open to female participants aged 19 Years to 39 Years. Per ClinicalTrials.gov, last updated 2026-07-07.
Sponsored by Cairo University · Observational
Three or two measurements (according to GA) using 2D and 3D ultrasound examinations will be done at initial assessment of the participants then after 1 to 2 weeks and at the end of the 12th week of gestation
First ultrasound scans: between 6 and 11 weeks of gestation that included the following:
Follow up scans was done one to two weeks later according the patient condition then at the end of 1st trimester where the previously mentioned parameters were measured.
22 studies on the registry are indexed under Abortion, Threatened; 2 are open to participants now.
This study's enrollment of 120 is below the median of 150 across 11 observational studies indexed under Abortion, Threatened.
Browse Abortion, Threatened studies →Cairo University is the lead sponsor of 4,780 studies on the registry; 1,427 are open to participants now.
Of its 36 completed or terminated interventional studies of FDA-regulated products, 5 (14%) have results posted.
Counted across the registry records on this site, refreshed daily.
One hundred and twenty women with threatened abortion.
Exclusion Criteria:
* Crow- rump length (CRL) measurement using 2D ultrasound. Proper measurement of the CRL was done according to obtaining a true, unflexed, longitudinal section of the embryo or fetus, with the end-points of the crown (the top of the head) and rump (the end of the trunk) clearly defined, and then placing the calipers correctly on these defined end-points. * Yolk sac diameter (largest outer to outer measure). * Mean gestational sac diameter (arithmetic mean of 3 diameters). * Embryonic heart rate. the heart rate was determined from M-mode tracings using electronic calipers .The sweep speed was set at 4 s and the calculation of the heart rate was made by measuring the time interval of two cardiac cycles, using clearly identified points in the M-mode tracing
3D ultrasound rotational VOCAL method was used. YSV measurement (axial, sagittal and coronal). The sagittal plane was chosen as the reference plane and 'scanned' to obtain the longest axis of the yolk sac. Then a magnification of image was used and the yolk sac moved to the center of the plane. The VOCAL switch was then activated using a 30° rotation angle and the manual setting. Calipers were positioned on the superior and inferior extremities of the structure and after obtaining six sequential planes, the equipment automatically displayed the yolk sac as a 3D image with its volume in cm3
Ongoing pregnancy rate
continuation of pregnancy beyond 12 weeks of gestation
Time frame: 12 weeks of gestational age
Plan to share: Undecided
No publications or documents are linked to this record.
This study is completed, as verified in Jul 2026. You cannot join it, but the record below documents what was studied.
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Cairo University