Centrum Clinic IVF Center

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.

This study evaluates the clinical efficacy of 3 different luteal phase support in patients undergoing frozen-thawed embryo transfer cycles. Endometrium preparation will be hormone replacement in all cycles. Starting from day 11, group 1 will receive 100 mg micronized progesterone parenteral daily injections, group 2 will receive 90 mg bioadhesive gel vaginal twice daily and group 3 will receive 40 mg oral dydrogesterone daily tablets.

Retrieval of an oocyte from a follicle relies on the release of the cumulus-oocyte-complex (COC) from the follicular wall into the lumen, thereby allowing aspiration by a needle. Flushing the follicle with multiple aspirations from the same follicle is used as a means to increase the ratio of COC per aspirated follicle. Data showed that follicular flushing is not superior to direct aspiration either in normally responding patients or in poor responders undergoing in vitro fertilization (IVF). There is no data in the literature regarding the issue in patients with mono-follicular growth. Direct aspiration or repeatedly flushing the follicle for those with a single follicle will be investigated.