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  • Title: The pregnancy outcome of progestin-primed ovarian stimulation using 4 versus 10 mg of medroxyprogesterone acetate per day in infertile women undergoing in vitro fertilisation: a randomised controlled trial.
    Author: Dong J, Wang Y, Chai WR, Hong QQ, Wang NL, Sun LH, Long H, Wang L, Tian H, Lyu QF, Lu XF, Chen QJ, Kuang YP.
    Journal: BJOG; 2017 Jun; 124(7):1048-1055. PubMed ID: 28276192.
    Abstract:
    OBJECTIVE: To investigate the clinical outcome and endocrinological characteristics of progestin-primed ovarian stimulation (PPOS) using 4 versus 10 mg of medroxyprogesterone acetate (MPA) per day in infertile women with normal ovary reserve. DESIGN: A randomised parallel controlled trial. SETTING: Tertiary-care academic medical centre. PARTICIPANTS: A cohort of 300 infertile women undergoing in vitro fertilisation (IVF)/intracytoplasmic sperm injection (ICSI) treatment. METHODS: Human menopausal gonadotropin (hMG; 225 iu per day) and MPA (group A, 10 mg per day; group B, 4 mg per day) were started simultaneously from cycle day 3 onwards. Ovulation was co-triggered by human chorionic gonadotropin (hCG; 1000 iu) and gonadotropin-releasing hormone agonist (GnRH agonist; 0.1 mg) when dominant follicles matured. Viable embryos were cryopreserved for later frozen embryo transfer (FET) in both groups. MAIN OUTCOME MEASURES: The primary outcome measure was the number of oocytes retrieved. Secondary outcomes included the incidence of a premature surge in luteinising hormone (LH), the number of viable embryos, and clinical pregnancy outcomes. RESULTS: The number of oocytes retrieved and viable embryos were similar between two groups (9.8 ± 6.3 versus 9.6 ± 5.9; 4.2 ± 2.6 versus 3.7 ± 3.0; P > 0.05). No significant difference was found in clinical pregnancy rate (58.0 versus 48.7%) and live birth rate per participant (48.7 versus 42.0%; P > 0.05). No premature LH surge and ovarian hyperstimulation syndrome (OHSS) occurred in either group. CONCLUSIONS: Progestin-primed ovarian stimulation (PPOS) using 4 or 10 mg of MPA per day was comparable in terms of the number of oocytes retrieved and pregnancy outcome after FET. The administration of 4 mg of MPA per day was sufficient to prevent an untimely LH rise in women undergoing IVF/ICSI treatment. TWEETABLE ABSTRACT: An RCT confirmed similar pregnancy outcome in P-primed ovarian stimulation with a daily dose of 4 or 10 mg MPA.
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