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  • Title: Intrauterine steroid contraceptives.
    Author: Scholten PC, Christaens GC, Haspels AA.
    Journal: Wien Med Wochenschr; 1987 Nov 15; 137(20-21):479-83. PubMed ID: 3131966.
    Abstract:
    Progestagen releasing IUDs were specially developed to diminish the problems of bleeding and pain with inert and copper containing IUDs. The intrauterine release of the progestagen causes endometrial atrophy, resulting in impairment of nidation, and interferes with transport of the ovum and the spermatozoa. Two available types, Progestasert, Biograviplan (Alza Corporation, California; Grünenthal) and Levonorgestrel Nova-T (Leiras Pharmaceuticals, Finland), have been sufficiently tested in multinational trials. Compared with Progestasert, LNG Nova-T showed lower pregnancy rates (Pearl Index 0.30), less risk for ectopic pregnancy and a longer effective lifetime (7 years). With both IUDs the amount and duration of menstrual blood loss is decreased. Amenorrhea is a frequent occurring side effect of LNG Nova-T, caused by endometrial atrophy. Intermenstrual blood loss and spotting incidences are not uniformly reduced and are still a frequent reason for removal. Preinsertion counselling may improve the acceptance of these non-health-threatening side effects. With both IUDs a decrease of menstrual cramps during periods is percepted and a low incidence of PID is found. Basically, the progestagen releasing IUD can be recommended to all women who wish an IUD for contraception and to women with contraindications for oral contraceptives, especially to those with menorrhagia, anaemia or risk for anaemia. Progestagen-releasing IUDs were developed to diminish the problems of bleeding and pain with inert and copper-containing IUDs. The intrauterine release of the progestagen causes endometrial atrophy, resulting in impairment of nidation, and interferes with transport of the ovum and the spermatozoa. 2 available types, Progestasert, Biograviplan (Alza Corporation, California; Grunenthal) and Levonorgestrel Nova-T (Leiras Pharmaceuticals, Finland), have been sufficiently tested in multinational trials. Compared with Progestasert, LNG Nova-T showed lower pregnancy rates (Pearl Index 0.30), less risk for ectopic pregnancy, and a longer effective lifetime (7 years). With both IUDs, the amount and duration of menstrual blood loss is decreased. Amenorrhea is a frequently occurring side effect of LNG Nova-T, caused by endometrial atrophy. Intermenstrual blood loss and spotting incidences are not uniformly reduced and are still a frequent reason for removal. Preinsertion counseling may improve the acceptance of these nonhealth threatening side effects. With both IUDs, a decrease in menstrual cramps during periods is perceived and a low incidence of PID is found. Basically, the progestagen-releasing IUD can be recommended to all women who wish an IUD for contraception and to women with contraindications for OCs, especially to those with menorrhagia, anemia, or risk for anemia. (author's)
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