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[Vaginal contraception with steroids].


 Some scientists added the progestin levonorgestrel to the vaginal ring which must be removed every 3 weeks to address the problem of irregular bleeding, but it adversely altered lipoprotein levels and caused too many hemorrhaging problems. On the other hand, scientists in the laboratory at Organon have conducted various studies of a vaginal ring with ethinyl estradiol and 3-keto-desogestrel at different doses which have yielded favorable results. A multicenter European study was conducted with 400 women aged 18-40 years wearing a vaginal ring with 0.120 mg keto-desogestrel and 0.015 mg ethinyl estradiol every day for 9 months. 10% had slight bleeding 15 days after insertion of the vaginal ring. In 10 women tested, the plasmal levels of progesterone and estrogen decreased by 4 nmol/l and 0.010 nmol/l, respectively. The first French study was conducted at the Gynecology College of Bordeaux and the South-West in 1988 and included 40 women followed for 9 cycles. The vaginal ring consisted of 2 compartments: the biggest compartment contained only 3-keto-desogestrel and the other also contained ethinyl estradiol. It remained in the vagina for 21 days, then was removed to be rinsed, dried, and placed in a box. It was reinserted on the 5th or 7th day of the cycle. This ring reduces the volume of blood during menses and eliminates abdominal cramps, nausea, and headaches. Women tolerate the vaginal ring better than they do oral contraceptives (OCs); for example, it does not cause them to gain weight, they tolerate glucose well, it brings about favorable changes in lipoproteins, it does not bring about conditions favorable to thrombophlebitis, and it can improve the skin for acne-sufferers. Young women accept vaginal rings enthusiastically. The efficacy of vaginal rings with 2 steroids is the same as that of OCs.
