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The Effect of Follicular Flushing on Oocyte Retrieval Rate and Embryo Quality

The Effect of Follicular Flushing on Oocyte Retrieval Rate and Quality of Embryo Developing From the Index Oocyte: Prospective Cohort Study

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT05584436
Enrollment
852
Registered
2022-10-18
Start date
2021-06-01
Completion date
2024-09-01
Last updated
2024-07-12

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Infertility

Keywords

oocyte pick up, oocyte retrieval, follicle flushing

Brief summary

Researchers will investigate the effect of flushing according to follicle size on the success of obtaining oocytes from a single follicle. In addition, by comparing the morphological quality of embryos developed from oocytes obtained with and without flushing, the possible effects of flushing on developing embryo quality will be investigated. By evaluating only one follicle for each patient, it is planned to investigate the effectiveness of the flushing process according to individual follicle characteristics, with a study design that has not yet been included in the literature.

Detailed description

Prior to the oocyte pick up (OPU) procedure, the dimensions (height x width x depth) of the first accessible follicle in any ovary will be recorded in millimeters. In this regard, any follicle larger than 12 mm will be selected for the first aspiration. It is planned to evaluate the effectiveness of the washing process in follicles with different sizes by performing the first aspiration procedure regardless of the follicle size. After aspiration of all the follicle fluid with a double lumen needle (17 Gauge), the remaining fluid in the needle and line will be aspirated by giving 2 cc flushing medium to the follicle. In this way, all of the pure follicle fluid will be delivered to the in vitro fertilization (IVF) laboratory with the OPU tube for initial evaluation. After the evaluation, if no cumulus oocyte complex (COC) is observed in the first sample, the washing process will be started. In this regard, flushing and aspiration will be performed respectively by giving 2 cc flushing medium to the same follicle 3 times. A total of 6 cc flushing medium obtained after the flushing-aspiration process will be delivered to the IVF laboratory and the presence of COC in it will be investigated again under the microscope. Depending on the retrieval of oocyte by direct aspiration or flushing, each oocyte will be followed individually and its quality will be evaluated in case of embryo development from this oocyte.

Interventions

None listed

Sponsors

Akdeniz University
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 43 Years
Healthy volunteers
Yes

Inclusion criteria

* Between 18-43 years old * Patients who will undergo ICSI procedure

Exclusion criteria

* Patients who will undergo oocyte cryopreservation * Patients with empty follicle syndrome in a previous OPU procedure * Cases that OPU cannot be performed due to premature ovulation

Design outcomes

Primary

MeasureTime frameDescription
Mean number of mature metaphase II oocytesThrough study completion, an average of 1 yearNumber of oocytes that have completed meiosis 1
Mean number of fertilized (2PN) oocytesThrough study completion, an average of 1 yearNumber of oocytes with two pronuclei
Mean number of high-quality blastocystThrough study completion, an average of 1 yearNumber of embryos with \>2BB quality

Countries

Turkey (Türkiye)

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026