[摘 要] 目的: 探讨注射绒毛膜促性腺激素(hCG)后不同时间行宫腔内人工授精(IUI)对妊娠的影响。方法: 根 据超声下卵泡大小(A组)或超声下卵泡大小结合尿内黄体生成素(LH)性质(B组)决定不同的IUI时间，比较彼此间妊娠率的不同，同时进一步分析其原因。 结果: 195例妇女共接受227个周期的IUI治疗，妊娠54例。每周期临床妊 娠率23.8%，每例临床妊娠率27.7 %。A 、B1、B2组妊娠率分别17.3%、29.0%、28.3%( P <0.05)。A组IUI 24 h内排卵率(34.7%)较B1、B2 组(50.7%、51.7%)低，该时段各组妊娠率38.2%、37.1%、32.3%(P>0.05)。 结论: 促排卵周期中尿LH测定结合卵泡大小可作为IUI时机选择的重要指标，其时间宜在排卵前，且越接近排卵越好，LH阳性者宜选择在其后24 h，阴性者宜选择在注射hCG后36 h。

    [关键词] 绒毛膜促性腺激素; 宫腔内; 人工授精; 妊娠

    Effect of different time to IUI after using hCG on pregnancy rate

    CHEN Li，XU Pei-zhen，YANG Hai-yan，YU Bing.

    (Changzhou Obstetrics and Gynecology Hospital， Changzhou Jiangsu 213003，China)

    [Abstract] Objective: To probe the effect of urinary LH on deciding the best time for intrauterine insem- ination (IUI) in induced ovulation. Methods: According to leading follicular size or according to both leading follicular size and the character of urinary LH to decide the different timing of IUI，the relationship between pregnancy rate and the timing of IUI as well as the cause of different pregnancy rate were analyzed. Results: There were 54 pregnancy cases in 227 cycles of 195 cases who underwent IUI treatment in our hos-pital.The pregnancy rate was 23.8% in every cycle. The pregnancy rate is 27.7% in every case.The preg-nancy rate of the group undetected urinary LH was 17.3% ......