Elsevier

Contraception

Volume 15, Issue 4, April 1977, Pages 379-387
Contraception

Comparative quantitation of menstrual blood loss with a d-norgestrel-releasing IUD and a Nova-T-copper device

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Abstract

A quantitative determination of menstrual blood loss by the Hallberg-Nilsson method was performed on users of a d-nor-gestrel-releasing IUD and a Nova-T-copper-IUD. The mean blood loss for three consecutive menstrual periods was found to be 20.7 ± 6.0 ml for the d-norgestrel-releasing IUD and 72.5 ± 6.2 ml for the Nova-T IUD users. Compared to the preinsertion control menstrual blood loss, there was a highly significant decrease in the d-norgestrel-releasing IUD group and a significant rise of blood loss in the Nova-T IUD group. Although changes in hemoglobin concentrations were not statistically significant, a rise in the hemoglobin concentration for the d-norgestrel-releasing IUD group was seen, whereas a slight decrease occurred in the Nova-T IUD group.

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