IS THE RETRIEVAL OF HIGH NUMBERS OF OOCYTES DESIRABLE IN PATIENTS TREATED WITH GONADOTROPIN-RELEASING HORMONE ANALOGS (GNRHA) AND GONADOTROPINS
IS THE RETRIEVAL OF HIGH NUMBERS OF OOCYTES DESIRABLE IN PATIENTS TREATED WITH GONADOTROPIN-RELEASING HORMONE ANALOGS (GNRHA) AND GONADOTROPINS
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DOI:
10.1093/oxfordjournals.humrep.a136940
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发表时间:
1989-07-01
影响因子:
6.1
通讯作者:
BONILLAMUSOLES, F
中科院分区:
文献类型:
--
作者:
PELLICER, A;RUIZ, A;BONILLAMUSOLES, F
Continuous administration of gonadotrophin-releasing hormone analogues (GnRHa) in patients stimulated for the purpose of IVF might have a direct effect on the ovary. We have evaluated the IVF outcome of patients treated with Buserelin and subsequently with a combination of follicle-stimulating hormone (FSH) and human menopausal gonadotrophin (HMG). Patients were divided into three groups according to the number of oocytes obtained by transvaginal ultrasound-guided follicular aspiration: group 1 (n = 35), in which 1-5 oocytes were retrieved; group 2 (n = 30), in whom 6-10 oocytes were obtained; group 3 (n = 32), in whom .gtoreq. 11 oocytes were collected. Only couples with normal semen samples at oocyte retrieval were included in this study. The dose of Buserelin employed was not different between groups. However, the amount of FSH/HMG necessary to reach an optimal response significantly (P < 0.01) decreased as follicular development increased. The quality of the oocytes obtained was evaluated based on the appearance of the oocyte-corona-cumulus complex, fertilization rate, morphological appearance of the embryos, and implantation rate. The fertilization rate was significantly (P < 0.01) decreased in group 3 (57.2%) in comparison with groups 1 (77.1%) and 2 (74.2%). There was no significant difference between groups in the quality of the embryos obtained or the quality of those replaced into the uterus. The implantation rate per embryo transferred was significantly (P < 0.05) higher in group 1 (16.5%) in comparison with groups 2 (6.6%) and 3 (8.2%). Pregnancy rates per patient were 22.9, 23.3 and 25.0% respectively (NS), despite a significant (P < 0.001) increase in the number of embryos replaced per patient in groups 2 (3.7 .+-. 0.2), and 3 (3.8 .+-. 0.3) compared with group 1 (2.3 .+-. 0.2). These data suggest that the retrieval of higher of numbers oocytes in women treated with GnRHa is correlated with oocytes of lower quality. This is manisfested by a decreased fertilization rate as well as a lower implantation rate of the embryos replaced into the uterus.