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Hum Reprod:来曲唑比枸橼酸氯米芬治疗低生育力PCOS女性效果更好

2017-09-07 石岩 环球医学

多囊卵巢综合征(PCOS)是一种较常见的卵巢内皮层病变,影响6~8%的女性。PCOS导致的不育症占所有病例的80%以上。2017年6月,发表在《Human Reproduction》的一项双盲、随机、对照试验,考察了来曲唑vs枸橼酸氯米芬(CC)在患有PCOS的低生育能力女性中的效果。


多囊卵巢综合征(PCOS)是一种较常见的卵巢内皮层病变,影响6~8%的女性。PCOS导致的不育症占所有病例的80%以上。2017年6月,发表在《Human Reproduction》的一项双盲、随机、对照试验,考察了来曲唑vs枸橼酸氯米芬(CC)在患有PCOS的低生育能力女性中的效果。

研究问题:作为原发性排卵诱导剂,来曲唑是否比枸橼酸氯米芬在患有无卵性多囊卵巢综合征(PCOS)的低生育能力女性中产生更好的妊娠率?

答案摘要:与CC相比,接受来曲唑作为原发性治疗的参与者会实现显着性(P=0.022)较高的临床妊娠应答率/患者(61.2%)。

已知:根据最近的Cochrane系统回顾(2014),与CC相比,来曲唑会改善无卵性PCOS女性的活产(LB)和妊娠率。然而,该系统回顾得出该结论的证据因较差的研究方法和发表偏倚而质量较低。

研究设计、规模和时间:该双盲随机对照试验(RCT)于2007年4月~2014年6月纳入了159例参与者。参与者按照1:1的比例随机分配到CC(n=79人)或来曲唑(n=80人)的组中。两种药物的封装完全相同。用混合块进行随机分组,并根据患者的BMI进行分层(<30和30~35 kg/m2)。

参与者/材料、设置和方法:该试验纳入了确诊为PCOS的低生育能力女性。治疗剂量起始于1片(CC 50mg,来曲唑2.5mg),非应答者增加至2片,并继续直到妊娠或第6个排卵周期。非应答者转到其他治疗6周。使用超声卵泡跟踪监测初始周期,然后使用黄体中期血清孕酮检测随后的周期。

测量和机会作用:159名纳入到意愿治疗分析的参与者中,4名女性治疗前妊娠,6人失访。剩下的149人(CC74人,来曲唑75人)完成了至少1次治疗。来曲唑治疗的女性(61%)比CC治疗的女性(43%)实现了显着性高的妊娠率(P=0.022,绝对差异[95% CI] 18%[3~33])。与CC(6[4~7]周期)相比,来曲唑(4[3~5])治疗者妊娠前治疗周期的中位数显着性较少(P=0.038)。LB率无显着性差异(P=0.089),然而来曲唑(48.8%)比CC(35.4%)具有较高LB率的趋势。转换治疗后,来曲唑治疗者妊娠率和LB率(45人,分别为28.9%和24.4%)与CC治疗者(31人,22.6%和19.4%)无统计学差异(P分别为0.539和0.601)。

局限性、需要注意的原因:局限性之一为排除了BMI>35 kg/m2的PCOS女性,这可能限制了该结果推广到该PCOS亚组。然而,此类女性因相关的挑战和风险而被多数生殖中心排除在治疗之外,尤其是欧洲。

结果更广泛的意义:实验结果与最近的Cochrane系统回顾的结果一致。然而,因其强大的设计,目前RCT提供了更有效和令人信服的证据表明,来曲唑比CC作为PCOS女性原发性排卵诱导剂更具优越性,妊娠率增加40%,出现妊娠的时间更短。此外,RCT中的参与者是在欧洲和全世界接受不孕治疗的低生育力PCOS人群的良好代表。因此,该结果可全球推广于临床实践。

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    2017-09-09 sunylz
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    2017-09-07 1e0f8808m18(暂无匿称)

    好好好.学习了.

    0

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