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  • Title: A prospective follow-up of two 21/7 cycles followed by two extended regimen 84/7 cycles with contraceptive pills containing ethinyl estradiol and drospirenone.
    Author: Seidman DS, Yeshaya A, Ber A, Amodai I, Feinstein I, Finkel I, Gordon N, Porat N, Samuel D, Shiran-Makler E, Wolman I.
    Journal: Isr Med Assoc J; 2010 Jul; 12(7):400-5. PubMed ID: 20862819.
    Abstract:
    BACKGROUND: Continuous use of combined oral contraceptives is currently attracting growing interest as a means of improving menstrual related symptoms and reducing the number of bleeding days. OBJECTIVES: To evaluate bleeding patterns, menstrual symptoms and quality of life with an extended 84/7 oral contraceptive regimen versus 21/7 cycles. METHODS: In two consecutive run-in cycles, 30 microg ethinyl estradiol and 3 mg drospirenone tablets taken on days 1-21 were followed by a tablet-free period from days 22 to 28 of each cycle and then by two 84 day cycles of pill use with a 7 day tablet-free interval. The primary outcome was the total number of bleeding/spotting days. Secondary outcomes were severity of daily symptoms, general well-being determined by the PGWBI questionnaire, and overall treatment satisfaction. RESULTS: Of the 137 women invited to participate in the study 109 (aged 18-40 years) were enrolled. The number of bleeding days decreased by about one-third from a calculated 31.8 days of bleeding under a cyclic 21/7 regimen to an expected total of 21.8 days for the extended 84/7 regimen. The incidence of menorrhagia, intermenstrual bleeding, dysmenorrhea, abdominal bloating, breast tenderness, depressive moods and irritability - when compared at enrollment and at the end of the second extended study period--was significantly lower (P < 0.005) among women on the continuous pill regimen. The median (range) global PGWBI scores were not substantially different before and after the extended use cycles: 78.2 (39.1-96.4) and 77.3 (30.9-96.4), respectively. Body weight and skin condition also remained constant. At the completion of the study: 65.5% of the women were either highly satisfied (41.4%) or satisfied (24.1%) with the extended regimen. CONCLUSIONS: The extended 84/7 regimen was found to be satisfactory for the majority of participants and was associated with a decrease in the number of bleeding days and an improvement in menstrual symptoms compared to 21/7 cycles.
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