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  1. 1
    129835

    WHO Scientific Group Meeting on Cardiovascular Disease and Steroid Hormone Contraceptives. Reunion du Groupe scientifique OMS sur les maladies cardio-vasculaires et les contraceptifs hormonaux steroidiens.

    WEEKLY EPIDEMIOLOGICAL RECORD. 1997 Nov 28; 72(48):361-3.

    More than 100 million women worldwide are thought to use steroid hormone contraceptive methods, with an estimated 93 million women using combined oral contraceptives (COCs). The composition and use of these contraceptive preparations, especially those of COCs, have changed dramatically over the years. The World Health Organization (WHO) convened a Scientific Group Meeting on Cardiovascular Disease and Steroid Hormone Contraception during November 3-7, 1997, to review current scientific data on the use of steroid hormone contraception as they relate to the risk of myocardial infarction, ischemic and hemorrhagic stroke, and venous thromboembolic disease. The group also reviewed the incidence of cardiovascular disease among women of reproductive age in general, how the effect of risk factors for cardiovascular disease may be changed using hormonal contraceptives, and whether different compositions of COCs have different cardiovascular risk profiles. The group was comprised of the authors of background papers prepared for the meeting and experts from around the world. The scientific group's conclusions are presented. The incidence and mortality rates of all cardiovascular diseases are very low among reproductive-age women. For women who do not smoke, who have their blood pressure checked, and who do not have hypertension or diabetes, the risk of myocardial infarction in COC users is not increased regardless of age. While current users of COCs have a low absolute risk of venous thromboembolism, their risk is still 3-6 times greater than that of nonusers, with the risk probably being highest during the first year of use.
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  2. 2
    112768

    [Sexual abstinence or thrombosis? Comment on the controversy regarding the "third generation pill"] Enthaltsamkeit oder Thrombose? Stellungnahme zur Kontroverse um "Pille der dritten Generation".

    Strobel E

    FORTSCHRITTE DER MEDIZIN. 1995 Nov 30; 113(33):18, 20.

    In October 1995 the WHO published the alarming results of an international study about oral contraceptives (OCs) and the risk of venous thrombosis stating that with the use of the third generation of OCs or micropills containing gestodene and desogestrel the risk increases twofold compared with OCs containing other gestagens. However, the Zurich discussion group, composed of German and Swiss hormone researchers, declared that this statement should be taken with a grain of salt. The study reported that 3 cases of thrombosis occur for 100,000 woman years when no OCs are used. When OCs without the above two gestagens are used the incidence of thrombosis increases to 8 cases/100,000 woman years. With the use of these micropills the incidence rose to 17 cases/100,000. The experts interpretation of the differentials was that the common risk factors for thrombosis (obesity, smoking, age, and duration of OC use) were not sufficiently taken into consideration. The original higher dose OCs already produced side effects early on, such as thrombosis, stroke, and heart infarction. Therefore, in the late 1980s the introduction of the new generation of OCs with lower doses seemed to be a welcome solution. The micropill, Femovan by Schering, was put on the market containing .03 mg of ethinyl estradiol (EE) and .075 mg of gestodene, a synthetic, very effective gestagen. The Organon Company introduced another preparation (Marvelon) that contained the same dose of EE and .15 mg of desogestrel. The considerable attention to the putative higher risk of thrombosis posed by these agents was not shared by the European Drug Commission, which did not see any reason for removal of these OCs from the market. The third generation OCs also provide benefits: reduction of bleeding anomalies and cardioprotective effects. Even the increased thrombosis risk is significantly lower than the thrombosis risk posed by pregnancy, delivery, and puerperium.
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