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Ovulation induction is the stimulation of ovulation by medication. It is usually used in the sense of stimulation of the development of ovarian follicles [ 1 ] [ 2 ] [ 3 ] to reverse anovulation or oligoovulation .
When used in conjunction with in vitro fertilization (IVF), controlled ovarian hyperstimulation confers a need to avoid spontaneous ovulation, since oocyte retrieval of the mature egg from the fallopian tube or uterus is much harder than from the ovarian follicle. The main regimens to achieve ovulation suppression are:
Template:Medications and dosages used in hormone therapy for transgender men References ^ Hembree WC, Cohen-Kettenis PT, Gooren L, Hannema SE, Meyer WJ, Murad MH, Rosenthal SM, Safer JD, Tangpricha V, T'Sjoen GG (November 2017).
Template:Androgen/anabolic steroid dosages for breast cancer References ^ Hembree WC, Cohen-Kettenis PT, Gooren L, Hannema SE, Meyer WJ, Murad MH, Rosenthal SM, Safer JD, Tangpricha V, T'Sjoen GG (November 2017).
Ovulatory disorders result in infrequent ovulation (Oligoovulation) or absent ovulation (anovulation) which causes infertility. The World Health Organisation (WHO) has classified anovulation into three main classes, which are hypogonadotropic hypogonadal anovulation (Class 1), normogonadotropic normoestrogenic anovulation (Class 2), and hypergonadotropic hypoestrogenic anovulation (Class 3).
The main medications used for induction of final maturation are human chorionic gonadotropin (hCG) and GnRH agonist. In fresh (rather than frozen ) autologous cycles of in vitro fertilization , final oocyte maturation triggering with GnRH agonist instead of hCG decreases the risk of ovarian hyperstimulation syndrome but decreases live birth rate .