This observational clinical study aims to determine the optimal timing of ovulation triggering in women aged 35 and above with poor ovarian reserve.
For this purpose, cases undergoing ovarian stimulation for assisted reproductive treatment and planned final oocyte triggering will be evaluated in two separate groups:
1. \*\*Experimental Group\*\*: Final oocyte triggering will be performed when the follicle or follicles measure between 13-16 mm.
2. \*\*Control Group\*\*: Final oocyte triggering will be performed when the follicle or follicles measure greater than 17 mm.
All triggers will be administered uniformly with 6500 units of recombinant hCG and 0,2 mg triptorelin injections.
The primary outcome of the study will be the number of mature oocytes. Secondary outcomes will include fertilization rates, embryo counts, and implantation rates.
Primary and secondary outcomes will be compared between the two groups.
Who can participate
Age range
35 Years – 44 Years
Sex
FEMALE
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* Women age equal to or greater than 35 years
* Women with low serum AMH (\<1,2 ng/ml),
* women with low AFC (\<5)
* women Undergoing assisted reproduction with Short antagonist protocol or long -agonist protocol
* women who used Max daily gonadotropin dose of 300 IU
Exclusion Criteria:
* Age \<35 years.
* Ovarian reserve parameters not meeting the POSEIDON group 4 definition.
* Natural or modified natural cycles without controlled ovarian stimulation.
* In vitro maturation (IVM) cycles.
* Luteal-phase stimulation or DuoStim protocols.
* Preimplantation genetic testing (PGT-A, PGT-M, or PGT-SR) cycles, unless prespecified for stratified analyses.
* Major untreated uterine cavity pathology (e.g., submucosal fibroids, significant intrauterine adhesions, congenital uterine anomalies) or untreated hydrosalpinx.
* Cycles with missing or incomplete follicular measurement data on the trigger day.
* Cycles with non-standardized or undocumented trigger-to-oocyte retrieval intervals.
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Change in the Mean Mature Oocytes between two triggering strategies
Timeframe: From enrollment to the end of treatment at 6-8 months.