Archer D F
Department of Obstetrics and Gynecology, Jones Institute for Reproductive Medicine, Eastern Virginia Medical School, Norfolk 23507-1912.
Curr Opin Obstet Gynecol. 1992 Dec;4(6):891-6.
Methods of reversible contraception, oral contraceptives, intrauterine devices, and Norplant (systemic progestin-only contraceptive; Wyeth-Ayerst, Radnor, PA), can be used for women over 35 years of age. Oral contraceptive formulations are safe and effective for healthy women up to the age of menopause. Oral contraceptives in women who do not smoke cigarettes do not result in a significant increased risk for cardiovascular disease. The incidence of breast cancer is not increased in women who have used oral contraceptives. A slight increase was found in younger women who had been on oral contraceptives based on a reanalysis of the contraceptive and steroid hormone study of the Centers for Disease Control. A reduction in the incidence of ovarian epithelial neoplasia by 40% was found in three European case-control studies. Two intrauterine devices are currently available on the US market: Paragard (GynoPharma, Somerville, NJ) and Progestasert (Alza Corp., Palo Alto, CA). Both of these provide highly effective contraception. A World Health Organization prospective randomized study found that there was an increase in pelvic inflammatory disease rates in the first 20 days after intrauterine device insertion. The intrauterine device itself did not increase the pelvic inflammatory disease incidence rates. The Norplant system exerts its contraceptive action through ovulation inhibition and alteration of cervical mucus. The major consumer complaint is irregular or prolonged uterine bleeding, which can be controlled by oral estrogen.
可逆性避孕方法,如口服避孕药、宫内节育器和Norplant(仅含孕激素的系统性避孕药;惠氏-艾尔斯特公司,宾夕法尼亚州拉德诺),可用于35岁以上的女性。口服避孕药配方对绝经前的健康女性是安全有效的。不吸烟的女性使用口服避孕药不会显著增加心血管疾病风险。使用口服避孕药的女性患乳腺癌的几率并未增加。根据疾病控制中心对避孕药和甾体激素研究的重新分析,发现年轻女性使用口服避孕药后乳腺癌发病率略有上升。三项欧洲病例对照研究发现,卵巢上皮性肿瘤的发病率降低了40%。美国市场上目前有两种宫内节育器:铜T380A(吉诺制药公司,新泽西州萨默维尔)和孕酮节育器(阿尔扎公司,加利福尼亚州帕洛阿尔托)。这两种节育器都能提供高效避孕。一项世界卫生组织的前瞻性随机研究发现,宫内节育器插入后的前20天内盆腔炎发病率有所上升。宫内节育器本身并未增加盆腔炎的发病率。Norplant系统通过抑制排卵和改变宫颈黏液来发挥避孕作用。主要的消费者投诉是子宫出血不规则或持续时间长,这可以通过口服雌激素来控制。