Treatment of Menstrually Related Disorders With Continuous v. Interrupted Oral Contraceptives

Summary

This study will determine whether uninterrupted treatment with birth control pills over several menstrual cycles prevents severe premenstrual syndrome (PMDD). Previous studies have shown that the hormones estrogen and progesterone regulate mood in women with MRMD. This study will use various treatment regimens with birth control pills and placebo (sugar pill) to clarify the relationships among estrogen and progesterone, the menstrual cycle, and mood. Healthy women between 18 and 45 years of age who menstruate may be eligible for this 15-week study. Candidates are screened with a physical examination, blood and urine tests, an electrocardiogram, and 3 months of symptoms ratings to confirm MRMD. Participants are randomly assigned to one of three treatment groups. Group 1 takes a birth control pill every day and on three occasions takes a placebo capsule. Group 2 takes a birth control pill most but not all days and on three occasions takes a placebo capsule. Group 3 takes a birth control pill every day and on three occasions takes another medication called CDB-2914 that causes menstrual bleeding to occur. Participants come to the NIH clinic every other week for blood tests and measurement of vital signs (blood pressure, pulse, and temperature) and to complete symptoms ratings scales. Subjects who develop breakthrough bleeding (menstruation earlier than expected) will have a transvaginal ultrasound. For this procedure, a probe is inserted into the vagina for about 10 minutes. The probe gives off and receives sound waves that can be used to form a picture of the endometrium (lining of the uterus). ...

Timeline

Start

2004-07

Primary completion

2010-06

Completion

2010-06

Publications

• Background Backstrom T, Sanders D, Leask R, Davidson D, Warner P, Bancroft J. Mood, sexuality, hormones, and the menstrual cycle. II. Hormone levels and their relationship to the premenstrual syndrome. Psychosom Med. 1983 Dec;45(6):503-7. doi: 10.1097/00006842-198312000-00004.
• Background Schmidt PJ, Nieman LK, Grover GN, Muller KL, Merriam GR, Rubinow DR. Lack of effect of induced menses on symptoms in women with premenstrual syndrome. N Engl J Med. 1991 Apr 25;324(17):1174-9. doi: 10.1056/NEJM199104253241705.
• Background Muse KN, Cetel NS, Futterman LA, Yen SC. The premenstrual syndrome. Effects of "medical ovariectomy". N Engl J Med. 1984 Nov 22;311(21):1345-9. doi: 10.1056/NEJM198411223112104.

Drugs

Indications