Ovarian activity in women taking an oral contraceptive containing 20 μg ethinyl estradiol and 150 μg desogestrel: Effects of low estrogen doses during the hormone-free interval ☆ ☆☆ ★ ★★ ♢

作者: S.R. Killick , C. Fitzgerald , Ann Davis

DOI: 10.1016/S0002-9378(98)70292-3

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摘要: Abstract OBJECTIVE: We assessed the effect of low ethinyl estradiol doses given during nominally hormone-free interval Mircette™ (brand desogestrel/ethinyl and estradiol) contraceptive regimen on ovarian activity. STUDY DESIGN: In a randomized, double-blind study, healthy women received 150 μg desogestrel 20 for 21 days followed by either placebo 7 (Mircette™/placebo; N = 24) or 2 10 5 (Mircette™/ethinyl estradiol; 23). RESULTS: During cycles 3, Mircette™/placebo group had higher incidence persistent follicles (eight subjects versus three subjects) average greater maximum follicle diameter than Mircette™/ethinyl group. One subject probably ovulated in cycle 2, another luteinized unruptured follicle; no such activity was seen The study medication well tolerated, there were apparent between-group differences vaginal bleeding patterns. CONCLUSION: regimen, which includes interval, more effectively suppresses follicular with monthly estrogen dose.

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