The results are reported of 2,204 cycles of treatment started for in vitro fertilisation and embryo transfer or gamete intrafallopian transfer, during 5 years, 1990-1994, using only follicle-stimulating hormone (FSH) preparations to stimulate the ovaries following pituitary desensitisation, combined with greatly simplified scheduling and monitoring of treatment. The physiological principles underlying these choices are discussed. In all women under 40 years of age and men with normal sperm, the use of unpurified urinary FSH in 1990-1993 resulted in oocyte collection in 94% of cycles started, pregnancy in 29% and live births in 23%. Using highly purified urinary FSH (uFSH-HP; Metrodin HP®) during 1994, the rate for oocyte collection was 97% and pregnancy 25% (birth rates not yet available). The difference compared with previous years was not significant. A study of 93 first cycles using uFSH-HP showed that the dosage required was usually (expressed as medians) 24 ampoules over 12 days (2 ampoules/day) resulting in 9 oocytes (range 2-36) of which 93% were mature and 64% resulted in cleaving embryos. The results are comparable with the best using human menopausal gonadotropin or unpurified FSH and classical detailed monitoring.

Keywords:
Infertility, In vitro fertilisation, Embryo transfer, Gamete intrafallopian transfer, Gonadotropins, Follicle-stimulating hormone, treatment
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© 1995 S. Karger AG, Basel
1995
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