IUD (cont.)

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What are the risks and complications of intrauterine devices (IUDs)?

An IUD may not be appropriate for women who have heavy menstrual bleeding, had previous pelvic infections, have more than one sexual partner, or plan on getting pregnant. This is because IUDs do not protect against sexually transmitted infections (STDs) and should not be in place if a woman intends to become pregnant.

If women become pregnant with their IUDs in place, 40% to 50% of the pregnancies end in miscarriage.

Women who use non-progesterone types of IUDs are 50% less likely to have an ectopic pregnancy compared to women using no contraception. When a woman using an IUD does become pregnant, the pregnancy is more likely to be ectopic, but still ectopic pregnancy in a user of an IUD is a rare occurrence.

Serious complications due to infection associated with an IUD may prevent a woman from being able to become pregnant in the future.

Also, with the progesterone-releasing IUD (levonorgestrel IUD), a reduction in menstrual flow and a decrease in painful menstrual cramping are often observed with continued use. This is because the progesterone hormone can cause thinning of the lining of the uterus. These menstrual changes are not dangerous in any way and do not mean that the contraceptive action of the IUD is diminished.

The IUD provides no protection against sexually transmitted diseases (STDs).

REFERENCE:

eMedicine, Contraception.
<http://emedicine.medscape.com/article/258507-overview>

Previous contributing authors: Barbara K. Hecht, Ph.D. and Carolyn Janet Crandall, MD, FACP


Last Editorial Review: 12/27/2010


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