[The effect of three trigger methodson pregnancy outcome of intrauterine insemination]

Objective: To analysepregnancy outcome of intrauterine insemination(IUI) after three different trigger methods. Methods: A retrospective study was designed, included 341 couples seeking for their first or second IUI cycle from 2016.7 to 2018.6 in women's hospital, school of medicine, zhejiang university. Ovulation was trigger by HCG 10 000 IU in 154 cases named HCG group, by 0.1/0.2 mg triptorelinin 94 cases called GnRHa group, by HCG combined with triptorelinin in 93 cases defined as dual trigger group. The primary outcome was clinical pregnancy rate and ongoing pregnancy rate beyond 28 gestational weeks,second outcome which contains biochemical pregnancy, miscarriagerate, ectopic pregnancy rateand multiple pregnancy rate were also observed in three groups. Results: Pregnancy outcomeshowed no significant difference among three groups. Conclusions: The study suggested that all this three methods(HCG trigger, GnRHa trigger, HCG combined with GnRHa dual trigger) couldinduced ovulation, their effects on IUI pregnancyout come were similar.