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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:
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 .
Ovulation induction, reversing anovulation or oligoovulation; Final maturation induction of oocytes; Controlled ovarian hyperstimulation, stimulating the development of multiple follicles of the ovaries in one single cycle; Physiologic hormonal stimulation of folliculogenesis
Ovulation induction is usually used in the sense of stimulation of the development of ovarian follicles [5] [6] [7] by fertility medication to reverse anovulation or oligoovulation. These medications are given by injection for 8 to 14 days.
Other medications in this class include tamoxifen and raloxifene, although both are not as effective as clomiphene and are thus less widely used for fertility purposes. [7] They are used in ovulation induction by inhibiting the negative feedback of estrogen at the hypothalamus. As the negative feedback of estrogen is inhibited, the hypothalamus ...
Clomifene has been used almost exclusively for ovulation induction in premenopausal women, and has been studied very limitedly in postmenopausal women. [ 64 ] Clomifene was studied for treatment and prevention of breast cancer , but issues with toxicity led to abandonment of this indication, as did the discovery of tamoxifen . [ 65 ]
A gonadotropin-releasing hormone agonist (GnRH agonist) is a type of medication which affects gonadotropins and sex hormones. [1] They are used for a variety of indications including in fertility medicine and to lower sex hormone levels in the treatment of hormone-sensitive cancers such as prostate cancer and breast cancer, certain gynecological disorders like heavy periods and endometriosis ...
It is in fact possible to restore ovulation using appropriate medication, and ovulation is successfully restored in approximately 90% of cases. The first step is the diagnosis of anovulation. The identification of anovulation is not easy; contrary to what is commonly believed, women undergoing anovulation still have (more or less) regular periods.