The Effect of Baseline Bilateral Uterine Artery Doppler Velocimetry on Obstetric Outcomes in HRT-FET Cycles

Akdeniz University

Status: Enrolling

Conditions: Infertility

Study type: Observational

Funder types: Other

Identifiers

NCT05526014

49849696

Details and patient eligibility

About

Researchers aim to determine how baseline (pre-conceptional) uterine perfusion characteristics affect implantation rates and obstetric complications in women who underwent high-quality blastocyst transfer.

Full description

In hormonally prepared frozen embryo transfer cycles, basal bilateral uterine artery Doppler velocimetry will be performed before treatment (pre-conceptional) in each patient. Only patients who have high-quality blastocyst stage embryos will be included in the study. Since the implantation potential of the specified embryos is high, possible embryo-induced implantation failure would be minimized.

Bilateral uterine artery Doppler velocimetry will be performed during the basal ultrasonography (on the 2-5th day of menstruation). Any uterine artery notch, absent diastolic or reverse flow also will be recorded. In addition, sub-endometrial (arcuate artery) blood flows will be evaluated by Doppler ultrasonography.

For endometrial preparation, estrogen replacement will be given for approximately 12-14 days as a routine In cases with endometrial thickness ≥7mm, progesterone treatment will be started and embryo transfer will be planned on the 6th day of the treatment.

A pregnancy test will be performed 9 days after embryo transfer. Pregnant patients will be called for ultrasonography control 3 weeks later to determine fetal heartbeat. Additionally, the patients will be followed till labor and any obstetric complications will be recorded.

Uterine artery Doppler ultrasonography findings in patients with and without pregnancy will be compared. Additionally, in the group in which pregnancy was achieved, obstetric results including birth weight, small-large for gestational age, presence of hypertension, and preterm labor will be correlated with baseline (pre-conceptional) uterine artery Doppler parameters.

Enrollment: 500 estimated patients

Sex: Female

Ages: 18 to 40 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Exogenous hormone preparation of the endometrial lining
• High embryo quality ((≥2BB) according to Alpha criteria
• Embryo transfer at the blastocyst stage

Exclusion criteria

• Patients whose treatments were canceled for any reason before the embryo transfer procedure
• Patients who underwent embryo transfer in the cleavage stage
• Presence of low-quality (<2BB) blastocysts
• >15% loss of viability of the embryo during embryo thawing,
• Patients with congenital uterine malformations,
• Patients in whom Doppler velocimetry cannot be performed optimally

Trial design

500 participants in 3 patient groups

non-pregnant

Description:

negative b-hCG results 9 days after embryo transfer.

pregnant with obstetric complications

Description:

Patients with a positive pregnancy result who develop obstetric complications such as preeclampsia, eclampsia, fetal growth restriction, oligohydramnios, polyhydramnios, preterm birth, gestational diabetes mellitus, antenatal bleeding and etc. after the 20th gestational weeks.

pregnant without obstetric complications

Description:

Patients who have positive pregnancy results and do not have any obstetric complications such as preeclampsia, eclampsia, fetal growth restriction, oligohydramnios, polyhydramnios, preterm birth, gestational diabetes mellitus, antenatal bleeding and etc. during pregnancy.