Ulipristal acetate emergency contraception.
نویسنده
چکیده
I read with interest the letter by Webb et al. about the pitfalls of adapting the Clinical Effectiveness Unit’s guidance on emergency contraception (EC). Their letter discusses, in relation to maximising the pharmacodynamic attributes of ulipristal acetate (UA), the significant inaccuracies inherent in the calculation of the timing of ovulation based on the menstrual history. However, we frequently rely on such a calculation when deciding whether an intrauterine device (IUD) can be fitted as an emergency contraceptive. Maybe in light of the evidence supplied in their letter this practice should be reviewed? If we accept that menstrual history can be used to guide the timing of ovulation in relation to EC, then recognising the significant cost differential between UA and levonorgestrel and UA’s proposed superior ability to delay/inhibit ovulation, maybe there is an opportunity to use UA ‘smarter’ around the proposed time of ovulation when an IUD is declined.
منابع مشابه
Ulipristal acetate versus levonorgestrel for emergency contraception: a randomised non-inferiority trial and meta-analysis.
BACKGROUND Emergency contraception can prevent unintended pregnancies, but current methods are only effective if used as soon as possible after sexual intercourse and before ovulation. We compared the efficacy and safety of ulipristal acetate with levonorgestrel for emergency contraception. METHODS Women with regular menstrual cycles who presented to a participating family planning clinic req...
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Several options for emergency contraception are available in the United States. This article describes each method, including efficacy, mode of action, safety, side effect profile, and availability. The most effective emergency contraceptive is the copper intrauterine device (IUD), followed by ulipristal acetate and levonorgestrel pills. Levonorgestrel is available for sale without restrictions...
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This report reviews some of the new studies regarding new hormonal contraceptive formulations (e.g., Yaz, Qlaira(®), extended-cycle or continuous combined contraceptives, subcutaneous depot medroxyprogesterone acetate, and ulipristal acetate as an emergency contraceptive). Recent data on the relationship between hormonal contraceptive use and bone health are also reviewed.
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ورودعنوان ژورنال:
- The journal of family planning and reproductive health care
دوره 39 1 شماره
صفحات -
تاریخ انتشار 2013