[Primary amenorrhea in 25 year old girl; establishment of menstruation in 1945 by a single weak dose of folliculin-progesterone].
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This article (1) reviews the decades-long history of short-term dosing regimens delaying the onset of expected, spontaneous menses or withdrawal bleeding in oral contraceptive users up to 20 days; (2) outlines treatment schedules that suppress menstrual bleeding for several months; and (3) evaluates the recently approved extended dosing regimen of 3 months' duration. For single-term postponement of normal menses, estrogen-progestogen combinations can be employed, starting about 7 days after ovulation. Oral contraceptive users can skip the 7-day pill-free period and continue with the active pills in the next package. The main focus of this review is the development of extended dosing schedules that result in cycles lasting 7 weeks up to several months and reduce the number of periods of bleeding and menstrual discomfort. Recently a dosing schedule was introduced into clinical use consisting of ethinyl estradiol, 30 microg, plus levonorgestrel, 150 microg/d, for 84 days, followed by 7 days of placebo. The pregnancy rate was < 1% for compliant women and 1.5% for all participants. A monophasic 21 + 7-day combination using the same daily doses had slightly higher pregnancy rates. The discontinuation rate for unscheduled bleeding and spotting was higher with extended dosing than with the conventional, 21 + 7 schedule.
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A middle-aged woman developed recurrent episodes of severe life-threatening anaphylaxis. All episodes were strikingly associated with the first day of menstrual bleeding. Temporary relief was achieved with indomethacin therapy. The patient fully recovered following abdominal hysterectomy and salpingoophorectomy. The possible role of sex hormones and prostaglandin F2 alpha in the pathogenesis of this problem is discussed.
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