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The IUCs (Intrauterine Contraceptives)

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Effectiveness:

99% Perfect Use

98% Typical Use

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Lecture Notes

Intrauterine contraception (IUC) is also referred to as an intrauterine device (an IUD). It is a long-acting reversible contraceptive method. It involves the placement of a small flexible plastic device into the uterus to prevent sperm from fertilizing an egg. The type of device inserted determines how long it may be left in place; the range is 5-20 years.

 

The two IUCs currently available in the United States are the Copper T 380A, marketed as ParaGard, and a hormone-releasing intrauterine system, marketed as Mirena. IUCs are the most inexpensive, long-term, and reversible form of birth control, and must be inserted and removed by a trained practitioner.

 

Current evidence does not support the common belief that the IUC is an abortifacient. An abortifacient is a device or substance that causes an abortion. It primarily prevents pregnancy by preventing fertilization. Both types of IUCs alter the lining of the uterus.

 

Once inserted, IUCs require little care and don't interfere with the spontaneity during intercourse. However, insertion may be uncomfortable. Also, heavy cramping typically follows and sometimes persists.

Image: McGraw Hill Library