Infertility: Intra-uterine insemination or timed intercourse after ovarian stimulation for male subfertility? A controlled study

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Abstract
In this randomized trial we investigated whether intra-uterine insemination (IUI) in couples with male subfertility leads to a higher probability of conception than timed intercourse after ovarian stimulation with human menopausal gonadotrophin (HMG) and human chorionic gonadotrophin (HCG). A total of 76 couples started 249 cycles, of which 47 were cancelled to prevent multiple pregnancies or hyperstimulation. After 202 completed treatment cycles, 15 pregnancies occurred, 11 after IUI and four after timed intercourse. The pregnancy rate per completed cycle with IUI was 10.3% (95% confidence interval: 5.5–17.5%) and 4.2% (1.2–10.1%) with timed intercourse. Compared with the estimated spontaneous chance to conceive, IUI after ovarian stimulation appeared to be more effective in the first three cycles. We conclude that in subfertile couples with a male factor, IUI tends to improve the probability of conception as compared to timed intercourse when ovarian stimulation is applied, and we advise such treatment for three cycles.

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