Mar 1, 2018 — Though the basic procedure remains the same, success rates in IUI cycles have ... IUI in unexplained infertility has been compared in many ways. ... Multi-​follicular growth is associated with higher pregnancy rates in COS-IUI.. Nov 14, 2014 — Intrauterine insemination (IUI) is a commonly used treatment for ... may recommend injectable gonadotropin, which is a follicle stimulating ... A major factor in the chance of success with ovulation stimulating drugs an