Long-term experience in intrauterine contraception a comparison between Lippes' loop, Dalcon-shield and copper-t
Schultze, K.W.
Geburtshilfe und Frauenheilkunde 40(2): 153-158
1980
ISSN/ISBN: 0016-5751 PMID: 7364178 DOI: 10.1055/s-2008-1037210Document Number: 446457
Results of observations of 3 groups of women using either the Lippes loop, the Dalkon shield, or the Copper-T 200 IUD are reported. Of 49 women who began use of the Lippes loop, 23 were still using it after 3 years. There were 13 cases of complications and 2 pregnancies. The tolerance rate decreased from 84% in the first year to 46% after the 3rd year of use. Of the 301 women who began Dalkon shield use, 93 were still using it after 3 years. The complication and pregnancy rates were determined according to the Life Table Method and varied for each year of IUD use. The tolerance rate sank from 73% to 30% after 3 years of use. Of 484 women who began Copper-T 200 use, 171 used it for 3 years. The complication rate decreased from 11.0 to 1.2 and the pregnancy rate from 2.5 to .6, according to the Life table Method, during the 3 years of IUD use. The tolerance rate decreased from 78% to 37%. The most favorable results were obtained for the Copper-T-200, especially if the device remains in place for 3 years.