Medroxyprogesterone Acetate for Abnormal Uterine Bleeding Due to Ovulatory Dysfunction: The Effect of 2 Different-Duration Regimens.

BACKGROUND Abnormal uterine bleeding (AUB) lowers the quality of life of women. This study attempted to determine which treatment protocol of medroxyprogesterone acetate (MPA), 15 vs 10 day-administration in a luteal phase, provides better outcomes in women with ovulatory dysfunction-related AUB (AUB-O). MATERIAL AND METHODS The study included a total of 52 patients with AUB-O: Women in Group A were given MPA between days 11 and 25 of the menstrual cycle (15-day protocol), whereas women in Group B were given MPA between days 16 and 25 (10-day protocol). Outcomes were compared between the 2 groups. RESULTS Women in group B, compared with those in group A, more often showed regular menstrual cycles and decrement of AUB. In group B, 3 cycles of treatment were sufficient to achieve AUB-stop (p<0.05). Post-treatment hemogram parameters and surgical treatment requirements were not different between the 2 groups. CONCLUSIONS In the second half of the cycle/predicted luteal phase, 10-day cyclic use of MPA (the group B) better regulated the menstrual cycle and more frequently stopped AUB-O.