Human chorionic gonadotropin (FRESENIUS KABI)

To assess whether intrauterine insemination (IUI) improves the fertility rates in women with unexplained infertility.

We recruited 68 women with unexplained infertility and allocated them randomly to treatment with three to five cycles of superovulation plus IUI (36 patients) or superovulation alone (32 patients). Superovulation was obtained with clomiphene citrate, human menopausal gonadotropins and human chorionic gonadotropins.

The cycle fecundity rate was 10% in patients who underwent superovulation alone and 19% in those treated with superovulation plus IUI (P < .05).

Our results demonstrate that superovulation plus IUI is more effective than superovulation alone in the treatment of unexplained infertility.