title: In vitro fertilisation: many unknowns.
abstract: (1) More than 36 000 oocyte collection procedures were done in France in 1997. The mean clinical pregnancy rate was about 20%, but figures varied widely among centres. (2) Ovarian stimulation prior to oocyte harvest is achieved by injecting recombinant FSH or hMG, usually together with a Gn-RH antagonist or analogue in order to avoid premature ovulation. (3) Ovarian hyperstimulation can be life-threatening.
mesh_terms: D005260:Female; D005307:Fertilization in Vitro; D005602:France; D006801:Humans; D007246:Infertility / Q000628:therapy; D016471:Ovarian Hyperstimulation Syndrome / Q000209:etiology; D010062:Ovulation Induction / Q000009:adverse effects / Q000379:methods; D011247:Pregnancy; D018873:Pregnancy Rate