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?:definition
  • Contraceptive devices that are made of soft, flexible plastic shaped like the letter \'T\' and that are about one-and-a-quarter inches tall with a thread or string on the end, which facilitates checking on placement and to assist with removal. They are intended to be inserted by a healthcare practitioner into a woman\'s uterus (i.e., intrauterine) to prevent pregnancy. There are two types of intrauterine devices (IUDs): (1) hormonal, and (2) copper wrapped. The hormonal IUD contains a small amount of levonorgestrel, a progestin hormone. Hormonal IUDs prevent conception by damaging or killing sperm and by thickening cervical mucus, making it impenetrable to sperm. Copper IUDs have copper wire coiled around the stem and arms. Copper is highly toxic to sperm; it disrupts sperm mobility and damages sperm.
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