A randomized clinical trial of a levonorgestrel-releasing intrauterine system and a low-dose combined oral contraceptive for fibroid-related menorrhagia

International Journal of Gynaecology and Obstetrics : the Official Organ of the International Federation of Gynaecology and Obstetrics
Gamal H SayedMamdouh M Shaaban

Abstract

To compare the efficacy of a levonorgestrel-releasing intrauterine system (LNG-IUS) with that of a low-dose combined oral contraceptive (COC) in reducing fibroid-related menorrhagia. In this single-center, open, randomized clinical trial, 58 women with menorrhagia who desired contraception were randomized to receive a LNG-IUS or COC. The outcomes included treatment failure, defined as the need for another treatment; menstrual blood loss (MBL) by the alkaline hematin method and a pictorial assessment chart (PBAC); hemoglobin levels; and "lost days." Treatment failed in 6 women (23.1%) in the LNG-IUS group and 11 (37.9%) in the COC group, for a hazard ratio of 0.46 (95% CI, 0.17-1.17, P=0.101). Using the alkaline hematin test, the reduction of MBL was significantly greater in the LNG-IUS group (90.9% ± 12.8% vs 13.4% ± 11.1%; P<0.001). Using PBAC scores, the reduction was also significantly greater in the LNG-IUS group (88.0% ± 16.5% vs 53.5% ± 5 1.2%; P=0.02). Moreover, hemoglobin levels increased from 9.7 ± 1.9g/dL to 11.7 ± 1.2g/dL (P<0.001) and lost days decreased from 8.2 ± 3.3 days to 1.3 ± 1.5 days (P=0.003) in the LNG-IUS group. Although the rate of treatment failure was similar in both groups, the LNG-IUS was more effect...Continue Reading

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