Endometrial Peristalsis and Pregnancy Outcomes in Hormone Replacement Therapy (HRT) - Frozen Embryo Transfer (FET) Cycles
Correlation Between Endometrial Peristalsis And Pregnancy Outcomes In Patients Undergoing Frozen Embryo Transfer With Hormone Replacement Therapy for Endometrial Preparation Protocol
Mỹ Đức Hospital
442 participants
Jun 30, 2026
OBSERVATIONAL
Conditions
Summary
Endometrial peristalsis may influence embryo implantation and pregnancy outcomes, but its role during hormone replacement therapy (HRT)-prepared frozen embryo transfer (FET) cycles remains unclear. This prospective observational study will assess endometrial peristalsis at predefined time points during HRT-prepared FET cycles using transvaginal ultrasonography and evaluate its association with pregnancy outcomes. The study aims to clarify the clinical significance of endometrial peristalsis in HRT-prepared FET cycles and to provide evidence supporting endometrial assessment in assisted reproductive technology.
Eligibility
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Interventions
Time point for measurement of endometrial peristalsis will be assessed at three specific time points: * On the second day to the fourth day of the menstrual cycle in the FET cycles. * The day of progesterone initiation (before progesterone exposure) * On the day of embryo transfer, immediately prior to the procedure Hormone measurements: serum levels of estradiol (E2) and progesterone (P4) will be assessed three times, on the same days as the endometrial peristalsis measurements, using electrochemiluminescence immunoassays. (Elecsys® Estradiol III and Elecsys® Progesterone III, Cobas® e 411, Roche Diagnostics, Germany): * On the second day to the fourth day of the menstrual cycle in the FET cycles * The day of progesterone initiation * On the transfer day prior to the procedure.
Locations(1)
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NCT07675213