Damla C Gonullu1, David H McCulloh2, LeRoy G Robinson3, Cheongeun Oh4, David L Keefe5,3. 1. Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI, USA. 2. NYU Grossman School of Medicine, New York University Langone Fertility Center, New York, NY, 10016, USA. david.mcculloh@nyulangone.org. 3. Department of Obstetrics and Gynecology, New York University Grossman School of Medicine, New York, NY, USA. 4. Department of Population Health, New York University Grossman School of Medicine, New York, NY, USA. 5. NYU Grossman School of Medicine, New York University Langone Fertility Center, New York, NY, 10016, USA.
Abstract
PURPOSE: Whether differences in stimulation parameters alter the number and proportion of MII oocytes retrieved. METHODS: Records of 2546 patients were examined, looking at age, day 2/3 follicle-stimulating hormone (FSH) and estradiol (E2) levels, total dose of gonadotropins administered (including FSH and human menopausal gonadotropin [hMG]), fraction of hMG administered, number of days of treatment with gonadotropins, and the dose of gonadotropins administered per day. We segregated the patients into 3 different classes depending on the trigger method used and 2 groups based on egg freeze vs. ICSI. Multiple regression methods were used to examine associations between stimulation parameters and the total number of eggs, number of immature oocytes (Poisson regression), and the fraction of retrieved oocytes that were immature (Logistic regression). RESULTS: After adjustments for different triggers and egg freeze versus ICSI, both the #immature oocytes and the immature fraction of oocytes were associated with the total gonadotropin dose (inversely) and the gonadotropin dose/day (positively). Other parameters were associated with the number of immature oocytes but were also associated with the number of oocytes retrieved. CONCLUSIONS: Stimulations using less total gonadotropin and more gonadotropin per day were associated with more immaturity. The type of trigger method used for final maturation was associated with immaturity but was believed to be predominantly due to trigger assignment to patients based on response. The association between use of ICSI and less immaturity was believed to be due to additional time for maturation in the ICSI group.
PURPOSE: Whether differences in stimulation parameters alter the number and proportion of MII oocytes retrieved. METHODS: Records of 2546 patients were examined, looking at age, day 2/3 follicle-stimulating hormone (FSH) and estradiol (E2) levels, total dose of gonadotropins administered (including FSH and human menopausal gonadotropin [hMG]), fraction of hMG administered, number of days of treatment with gonadotropins, and the dose of gonadotropins administered per day. We segregated the patients into 3 different classes depending on the trigger method used and 2 groups based on egg freeze vs. ICSI. Multiple regression methods were used to examine associations between stimulation parameters and the total number of eggs, number of immature oocytes (Poisson regression), and the fraction of retrieved oocytes that were immature (Logistic regression). RESULTS: After adjustments for different triggers and egg freeze versus ICSI, both the #immature oocytes and the immature fraction of oocytes were associated with the total gonadotropin dose (inversely) and the gonadotropin dose/day (positively). Other parameters were associated with the number of immature oocytes but were also associated with the number of oocytes retrieved. CONCLUSIONS: Stimulations using less total gonadotropin and more gonadotropin per day were associated with more immaturity. The type of trigger method used for final maturation was associated with immaturity but was believed to be predominantly due to trigger assignment to patients based on response. The association between use of ICSI and less immaturity was believed to be due to additional time for maturation in the ICSI group.
Authors: Hannah M Brown; Kylie R Dunning; Melanie Sutton-McDowall; Robert B Gilchrist; Jeremy G Thompson; Darryl L Russell Journal: Reproduction Date: 2016-11-22 Impact factor: 3.906
Authors: Craig A Witz; Gaurang S Daftary; Kevin J Doody; John K Park; Yodit Seifu; Vladimir I Yankov; Patrick W Heiser Journal: Fertil Steril Date: 2020-05-13 Impact factor: 7.329