Intrauterine devices.
The aim of this chapter is to review the worldwide use of intrauterine devices (IUDs) for contraception and the long-term contraceptive efficacy and safety of copper-bearing IUDs. The TCu380A and Multiload Cu375 have a very low failure rate (0.2-0.5%) over 10 years. The main concerns of the use of IUDs are risk of pelvic inflammatory diseases and increased menstrual blood loss and irregular bleeding. Factors associated with an increase in risk of pelvic inflammatory diseases are discussed. Preventive measures can be taken with careful screening of eligible IUD users, technical training and adequate service facilities for provision of IUDs. Levonorgestrel-releasing IUDs have the benefit of reducing menstrual blood loss in addition to high contraceptive efficacy. The copper IUD is the most effective method for emergency contraception. It can prevent over 95% of unwanted pregnancies within 5 days of unprotected intercourse.
Bilian
Xiao
X
National Research Institute for Family Planning, No 12 Da Hui Si, Beijing 100081, People's Republic of China.
D003281:Contraceptives, Postcoital / Q000008:administration & dosage; D005260:Female; D006801:Humans; D007435:Intrauterine Devices, Copper / Q000009:adverse effects / Q000706:statistics & numerical data*; D008595:Menorrhagia / Q000209:etiology; D009839:Oligomenorrhea / Q000209:etiology; D000292:Pelvic Inflammatory Disease / Q000209:etiology / Q000517:prevention & control; D018456:Reproductive Medicine; D016896:Treatment Outcome
D003281:Contraceptives, Postcoital