What is an Intrauterine Device?
An IUD is a small, flexible T-shaped object that is placed in the uterus during a physicians visit to protect against pregnancy. IUDS are one of the most commonly used birth control methods around the world. IUDS are extremely effective at preventing pregnancy (99.2-99.9% effective), but provide no protection against sexually transmitted infections. Currently, two types of IUDs are available in the United States: the ParaGard Copper T 380A and Mirena. The Copper T works by using copper to prevent pregnancy and is effective for up to 12 years, while Mirena releases a form of progestin called levonorgestrel and is effective for 5 years. An IUD can be removed easily by a physician at any time. Both types of IUDs have a plastic string attached to the bottom of the "T". The string is long enough to be felt with a finger, but it cannot be seen outside of the vagina. The position of the string should be checked after each menstral cycle to ensure that it is positioned near the cervix, but not inside the uterus.
