Lying still after intrauterine insemination

[kkmalaysia]

After intrauterine insemination, spermatozoa may reach the fallopian tube (the site of fertilisation) within 2–10 minutes. There is uncertainty, however, about the need for women to be on their backs for a while after intrauterine insemination in order to improve the likelihood of pregnancy. Now, a study in the Netherlands has shown that 15 minutes of supine lying improves pregnancy rates.

A total of 391 women were randomized to either remain supine for 15 minutes or to get up immediately after intrauterine insemination for three cycles. The ongoing pregnancy rate was 27% (immobilization) vs 18% (mobilization), a significant difference. The rates of live birth were 27% vs 17%. In the first, second, and third treatment cycles, the ongoing pregnancy rates were 10%, 10%, and 7% vs 7%, 5%, and 5%.

The researchers conclude that 15 minutes of immobilization after intrauterine insemination should be routine.

Custers IM et al. Immobilisation versus immediate mobilisation after intrauterine insemination: randomised controlled trial. BMJ 2009;339:1065–1067 (b4080); Ledger WL. Supine positioning after intrauterine insemination. Ibid:1040–1041 (editorial).