Duru, Namık KemalDede, MuratHaşimi, AdnanBaşer, İskender2024-07-122024-07-122007Duru NK, Cincik M, Dede M, Hasimi A, Baser I. (2007). Retrieval of zona-free immature oocytes in a woman with recurrent empty follicle syndrome: a case report. J Reprod Med. 52(9), s. 858-863.0024-7758https://pubmed.ncbi.nlm.nih.gov/17939607/https://hdl.handle.net/20.500.12415/4387Background: Different ovulation trigger methods such as gonadotropin releasing hormone-agonist (GnRH-a) and recombinant human chorionic gonadotropin (r-hCG) plus rescue oocyte retrieval might reveal oocytes in patients with recurrent empty follicle syndrome. Case: Endogenous luteinizing hormone was triggered with a GnRH-a (Buserelin [Suprefact pro-injection, Aventis-Pharma, Turkey], 250 microg subcutaneously) in a GnRH antagonist (Cetrorelix [Cetrotide 0.25, SeronoTurkey], 0.25 mg/d, starting on day 6), down-regulated cycle. At the first scheduled retrieval, 3 cumulus-oocytecorona complexes were recovered from the left ovary. During chemical denudation with hyaluronidase, 2 of them underwent lysis. The third was a zona-free, germinalvesicle-stage oocyte after mechanical denudation. Oocyte pickup was stopped, and recombinant human chorionic gonadotropin (hCG) (250 microg subcutaneously) was injected. Five cumulus-oocyte-corona complexes were retrieved from the right ovary 24 hours after rescue with recombinant hCG. Only mechanical denudation was done, and 4 zona-free oocytes with germinal vesicle breakdown were seen. All oocytes underwent intracytoplasmic sperm injection, and none of them were fertilized. Conclusion: Oocyte maturation defects should be included in etiologic mechanisms for counseling patients with empty follicle syndrome.enCC0 1.0 Universalinfo:eu-repo/semantics/openAccessArticle8589Q486352