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In case of amenorrhea, a period can be induced by intake of an oral progestin for 10 days. Daily administration of the ovulation induction regimen, starting on day 3, 4, or 5, [23] and it is usually taken for 5 days. [9] [24] Sexual intercourse or artificial insemination by the time of ovulation.
Letrozole, sold under the brand name Femara among others, is an aromatase inhibitor medication that is used in the treatment of breast cancer for post-menopausal women. [ 1 ] It was patented in 1986 and approved for medical use in 1996. [ 4 ]
Aromatase inhibitors are a common fertility treatment to treat women with PCOS. A meta-analysis analyzing live birth rates for women with PCOS treated with clomiphene compared to letrozole found that letrozole resulted in higher live birth rates. [11] However, ovulation induction remains an off-label indication, which affects use.
[38] [39] It is given by intramuscular or subcutaneous injection and forms a long-lasting depot, from which it is slowly released over a period of several months. It takes one week to take effect if given after the first five days of the period cycle, and is effective immediately if given during the first five days of the period cycle.
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:
Of the 85% of identified infertility, 25% are due to disordered ovulation (of which 70% of the cases are due to polycystic ovarian syndrome). [2] Tubal infertility, in which there is a structural problem with the fallopian tubes is responsible for 11-67% of infertility in women of child bearing age, with the large range in prevalence due to ...
Urinary ovulation prediction kits are typically found over-the-counter and there are many brands to choose from. This test measures the amount of luteinizing hormone, a hormone that increases just before ovulation, that is in the urine. Before ovulation, the luteinizing hormone levels dramatically increase; this is known as the "LH surge".
These methods may be used to achieve pregnancy by timing unprotected intercourse for days identified as fertile, or to avoid pregnancy by avoiding unprotected intercourse during fertile days. The first formalized calendar-based method was developed in 1930 by John Smulders, a Catholic physician from the Netherlands .
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