title: Do copper containing intrauterine contraceptive devices need to be changed after 2 years?
abstract: A review of the prolonged use of copper containing intrauterine contraceptive devices is presented. Because of the disadvantage of changeover, the biochemical evidence, and the findings of long-term studies, a more conservative approach of changeover after every 3 or may be even 4 years is advocated.
mesh_terms: D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007433:Intrauterine Device Expulsion; D007435:Intrauterine Devices, Copper / Q000009:adverse effects; D010146:Pain / Q000209:etiology; D011247:Pregnancy; D013997:Time Factors; D014592:Uterine Hemorrhage / Q000209:etiology