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Do copper containing intrauterine contraceptive devices need to be changed after 2 years?

, : Do copper containing intrauterine contraceptive devices need to be changed after 2 years?. Clinical Reproduction and Fertility 2(4): 283-287

Australian manufacturers of IUDs have recommended that copper containing devices should be changed after 2 years of use. This paper reviews the research evidence on the prolonged use of copper IUDs. Biochemical evidence has noted no decrease in copper concentrations in uterine secretions during the 4 years after IUD insertion. In addition, the 3rd and 4th years after IUD insertion appear to be associated with fewer side effects and a lower incidence of accidental pregnancy than the 1st 2 years. On the basis of this evidence, it is suggested that the recommendation to change copper IUDs every 2 years is overly conservative. Rather, it appears that these devices can be left in place for at least 3 years, and possibly for 4 years. Even if the rate of pregnancy is slightly increased, the benefits of less frequent changeover (i.e., elimination of the trauma of removal and the discomfort of reinsertion) outweigh the possible risks.


PMID: 6678604

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