The UK Faculty of Sexual & Reproductive Healthcare (FSRH) has updated its 2014 guideline1 on the progestogen-only implant, reexamining old evidence, reflecting new evidence and highlighting changes in practice. While much remains unchanged, important new information and guidance is provided about the change in recommended etonogestrel implant (ENG-IMP) insertion site, duration of ENG-IMP use and expected bleeding patterns, and the evidence around the highly topical risk of intravascular insertion is set out. The ENG-IMP is still the only available contraceptive implant in the UK. Evidence suggests that it provides highly effective contraception for 3 years even in users with raised body mass index. Most of the reported pregnancies during ENG-IMP use were conceived before implant insertion or established efficacy, or where efficacy was reduced by enzyme-inducing medication. There have been very few reported pregnancies during established use with no accountable reason for contraceptive failure. Clarity is provided around the routine use of the ENG-IMP in the fourth year (note this varies from …

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关于仅含孕激素的植入物的新 FSRH 指南

英国性与生殖保健学院 (FSRH) 更新了 2014 年关于纯孕激素植入物的指南1，重新审查了旧证据，反映了新证据并强调了实践中的变化。虽然大部分内容保持不变，但提供了关于推荐的依托孕烯植入物 (ENG-IMP) 插入部位、ENG-IMP 使用持续时间和预期出血模式的变化的重要新信息和指导，以及关于血管内插入高度局部风险的证据是出发。ENG-IMP 仍然是英国唯一可用的避孕植入物。有证据表明，即使在体重指数升高的用户中，它也能提供 3 年的高效避孕。使用 ENG-IMP 期间报告的大多数怀孕是在植入物插入或确定疗效之前怀孕的，或酶诱导药物降低疗效。很少有报告在确定使用期间怀孕而没有避孕失败的原因。围绕第四年 ENG-IMP 的常规使用提供了清晰的信息（注意这从……